World War II in the context of Klaus Fuchs

A democracy is a political system, or a system of decision-making within an institution, organization, or state, in which members have a share of power. Modern democracies are characterized by two capabilities of their citizens that differentiate them fundamentally from earlier forms of government: to intervene in society and have their sovereign (e.g., their representatives) held accountable to the international laws of other governments of their kind. Democratic government is commonly juxtaposed with oligarchic and monarchic systems, which are ruled by a minority and a sole monarch respectively.

Democracy is generally associated with the efforts of the ancient Greeks, whom 18th-century intellectuals such as Montesquieu considered the founders of Western civilization. These individuals attempted to leverage these early democratic experiments into a new template for post-monarchical political organization. The extent to which these 18th-century democratic revivalists succeeded in turning the democratic ideals of the ancient Greeks into the dominant political institution of the next 300 years is hardly debatable, even if the moral justifications they often employed might be. Nevertheless, the critical historical juncture catalyzed by the resurrection of democratic ideals and institutions fundamentally transformed the ensuing centuries and has dominated the international landscape since the dismantling of the final vestige of the British Empire following the end of the Second World War.

Shinjuku (Japanese: 新宿区, Hepburn: Shinjuku-ku; IPA: [ɕiɲdʑɯkɯ] ), officially called Shinjuku City, is one of the 23 special wards of Tokyo. It is located to the west of the Japanese capital.

Since the end of World War II, Shinjuku has become a major secondary center of Tokyo (fukutoshin), rivaling the original city center in Marunouchi. Today, it is a major commercial and administrative center, housing the busiest railway station in the world (Shinjuku Station) as well as the Tokyo Metropolitan Government Building, the administrative center of the Tokyo Metropolitan Government.

Agriculture, forestry, and fishing (Japanese: 農林水産, nōrinsuisan) form the primary sector of industry of the Japanese economy together with the Japanese mining industry. Together, they account for 1.3% of gross national product; only 20% of Japan's land is suitable for cultivation, and the agricultural economy is highly subsidized.

Agriculture, forestry, and fishing dominated the Japanese economy until the 1940s, but thereafter declined into relative unimportance (see Agriculture in the Empire of Japan). In the late 19th century (Meiji period), these sectors had accounted for more than 80% of employment. Employment in agriculture declined in the prewar period, but the sector was still the largest employer (about 50% of the work force) by the end of World War II. It was further declined to 23.5% in 1965, 11.9% in 1977, and to 7.2% in 1988. The importance of agriculture in the national economy later continued its rapid decline, with the share of net agricultural production in GNP finally reduced between 1975 and 1989 from 4.1% to 3% In the late 1980s, 85.5% of Japan's farmers were also engaged in occupations outside farming, and most of these part-time farmers earned most of their income from nonfarming activities.

Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main island of Taiwan, also known as Formosa, lies between the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. It has an area of 35,808 square kilometres (13,826 square miles), with mountain ranges dominating the eastern two-thirds and plains in the western third, where its highly urbanized population is concentrated. The combined territories under ROC control consist of 168 islands in total covering 36,193 square kilometres (13,974 square miles). The largest metropolitan area is formed by Taipei (the capital), New Taipei City, and Keelung. With around 23.9 million inhabitants, Taiwan is among the most densely populated countries.

Taiwan has been settled for at least 25,000 years. Ancestors of Taiwanese indigenous peoples settled the island around 6,000 years ago. In the 17th century, large-scale Han Chinese immigration began under Dutch colonial rule and continued under the Kingdom of Tungning, the first predominantly Han Chinese state in Taiwanese history. The island was annexed in 1683 by the Qing dynasty and ceded to the Empire of Japan in 1895. The Republic of China, which had overthrown the Qing in 1912 under the leadership of Sun Yat-sen, assumed control following the surrender of Japan in World War II. But with the loss of mainland China to the Communists in the Chinese Civil War, the government moved to Taiwan in 1949 under the Kuomintang (KMT).

The Pentagon is the headquarters building of the United States Department of Defense, in Arlington County, Virginia, across the Potomac River from Washington, D.C. The building was constructed on an accelerated schedule during World War II. As a symbol of the U.S. military, the phrase The Pentagon is often used as a metonym for the Department of Defense and its leadership.

The building was designed by American architect George Bergstrom and built by contractor John McShain. Ground was broken on 11 September 1941, and the building was dedicated on 15 January 1943. General Brehon Somervell provided the major impetus to gain Congressional approval for the project. Colonel Leslie Groves was responsible for overseeing the project for the U.S. Army Corps of Engineers, which supervised it.

The Thessaloniki International Fair (Greek: Διεθνής Έκθεση Θεσσαλονίκης, Diethnis Ekthesi Thessalonikis), abbreviated TIF (ΔΕΘ), is an annual international exhibition event held in Thessaloniki, Greece's second-largest city. It has been held in the first week of September since 1926, and its opening is traditionally marked by a series of programmatical statements by the Prime Minister of Greece. The 2020 fair was cancelled due to the COVID-19 pandemic, the first cancellation since WW2.

Skopje is the capital and largest city of North Macedonia. It lies in the northern part of the country, in the Skopje Valley along the Vardar River, and is the political, economic, and cultural centre of the country. As of the 2021 census, the city had a population of 526,502. Skopje covers 571.46 km (220.64 sq mi) and includes both urban and rural areas, bordered by several municipalities and close to the borders of Kosovo and Serbia.

The area of Skopje has been continuously inhabited since at least the Chalcolithic period. The city — known as Scupi at the time — was founded in the late 1st century during the rule of Domitian, and abandoned in 518 after an earthquake destroyed the city. It was rebuilt under Justinian I. It became a significant settlement under the First Bulgarian Empire, the Serbian Empire (when it served briefly as a capital), and later under the Ottoman Empire, which ruled the city for over five centuries. In 1912, following the Balkan Wars, Skopje was annexed by the Kingdom of Serbia. It became part of Yugoslavia after World War I and, following World War II, became the capital of the Socialist Republic of Macedonia, one of its constituent republics. In 1963, a major earthquake devastated the city, after which it was largely rebuilt with international assistance. Skopje became the capital of independent North Macedonia in 1991.

Romania is a country located at the crossroads of Central, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to the east, and the Black Sea to the southeast. It has a mainly continental climate, and an area of 238,397 km (92,046 sq mi) with a population of 19 million people. Romania is the twelfth-largest country in Europe and the sixth-most populous member state of the European Union. Europe's second-longest river, the Danube, empties into the Danube Delta in the southeast of the country. The Carpathian Mountains cross Romania from the north to the southwest and include Moldoveanu Peak, at an altitude of 2,544 m (8,346 ft). Bucharest is the country's capital, largest urban area, and financial centre. Other major urban areas include Cluj-Napoca, Timișoara, Iași, Constanța and Brașov.

Settlement in the territory of modern Romania began in the Lower Paleolithic, later becoming the Dacian Kingdom before Roman conquest and Romanisation. The modern Romanian state was formed in 1859 with the unification of Moldavia and Wallachia under Alexandru Ioan Cuza, becoming the Kingdom of Romania in 1881 under Carol I of Romania. Romania gained independence from the Ottoman Empire in 1877, formalised by the Treaty of Berlin. After World War I, Transylvania, Banat, Bukovina, and Bessarabia joined the Old Kingdom, forming Greater Romania, which reached its largest territorial extent. In 1940, under Axis pressure, Romania lost territories to Hungary, Bulgaria, and the Soviet Union. Following the 1944 Romanian coup d'état, Romania switched sides to join the Allies. After World War II, it regained Northern Transylvania through the Paris Peace Treaties. Under Soviet occupation, King Michael I was forced to abdicate, and Romania became a socialist republic and Warsaw Pact member. After the uniquely violent Romanian revolution in December 1989, Romania began a transition to liberal democracy and a market economy.

The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about 85,133,000 km (32,870,000 sq mi). It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for separating the New World of the Americas (North America and South America) from the Old World of Afro-Eurasia (Africa, Asia, and Europe).

Through its separation of Afro-Eurasia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations. While the Norse were the first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be the most consequential. Columbus's expedition ushered in an age of exploration and colonization of the Americas by European powers, most notably Portugal, Spain, France, and the United Kingdom. From the 16th to 19th centuries, the Atlantic Ocean was the center of both an eponymous slave trade and the Columbian exchange while occasionally hosting naval battles. Such naval battles, as well as growing trade from regional American powers like the United States and Brazil, both increased in degree during the early 20th century. After World War II, major military operations became rarer, though notable postwar conflicts include the Cuban Missile Crisis and the Falklands War. The ocean remains a core component of trade around the world.

The historiography of World War II is the study of how historians portray the causes, conduct, and outcomes of World War II.

There are different perspectives on the causes of the war; the three most prominent are the Orthodox from the 1950s, Revisionist from the 1970s, and Post-Revisionism which offers the most contemporary perspective. The orthodox perspective arose during the aftermath of the war. The main historian noted for this perspective is Hugh Trevor-Roper. Orthodox historians argue that Hitler was a master planner who intentionally started World War II due to his strong beliefs on fascism, expansionism, and the supremacy of the German state. Revisionist historians argue that it was an ordinary war by world standards and that Hitler was an opportunist of the sort who commonly appears in world history; he merely took advantage of the opportunities given to him. This viewpoint became popular in the 1970s, especially in the revisionism of A. J. P. Taylor. Orthodox historians argue that, throughout the course of the war, the Axis powers were an evil consuming the world with their powerful message and malignant ideology, while the Allied powers were trying to protect democracy and freedom. Post-revisionist historians of the causes, such as Alan Bullock, argue that the cause of the war was a matter of both the evil and the banal. Essentially Hitler was a strategist with clear aims and objectives, that would not have been achievable without taking advantage of the opportunities given to him. Each perspective of World War II offers a different analysis and provides different perspectives on the blame, conduct and causes of the war.

The Winter Olympic Games (French: Jeux olympiques d'hiver), also known as the Winter Olympics, is a major international multi-sport event held once every four years for sports practiced on snow and ice. The first Winter Olympic Games, the 1924 Winter Olympics, were held in Chamonix, France. The modern Olympic Games were inspired by the ancient Olympic Games, which were held in Olympia, Greece, from 776 BCE to 394 CE. The Baron Pierre de Coubertin of France founded the International Olympic Committee (IOC) 1,500 years later in 1894, leading to the first modern Summer Olympic Games in Athens, Greece in 1896. The IOC is the governing body of the Olympic Movement, with the Olympic Charter defining its structure and authority.The original five Winter Olympic Sports (consisting of nine disciplines) were bobsleigh, curling, ice hockey, Nordic skiing (consisting of the disciplines military patrol, cross-country skiing, Nordic combined, and ski jumping), and skating (consisting of the disciplines figure skating and speed skating). The Games were held every four years from 1924 to 1936, interrupted in 1940 and 1944 by World War II, and resumed in 1948. Until 1992, the Summer Olympic Games and the Winter Olympic Games were held in the same year. A decision to change this was made in 1986, when during the 91st International Olympic Committee session, IOC members decided to alternate the Summer Olympic Games and the Winter Olympic Games on separate four-year cycles in even-numbered years. Also, at that same congress it was decided that 1992 Winter Olympics would be the last to be held in the same year as the Summer Games and that to change the rotation, the games that would be held in 1996 would be brought forward by two years, being scheduled to 1994. After those games, the next were to be held in 1998 when the four-year Olympic Cycle resumed.

The Winter Olympic Games have evolved since their inception. Sports and disciplines have been added and some of them, such as alpine skiing, luge, short track speed skating, freestyle skiing, skeleton, and snowboarding, have earned a permanent spot on the Olympic program. Some others, including curling and bobsleigh, have been discontinued and later reintroduced; others have been permanently discontinued, such as military patrol, though the modern Winter Olympic sport of biathlon is descended from it. Still others, such as speed skiing, bandy and skijoring, were demonstration sports but never incorporated as Olympic sports. The rise of television as a global medium for communication enhanced the profile of the Games. It generated income via the sale of broadcast rights and advertising, which has become lucrative for the IOC. This allowed outside interests, such as television companies and corporate sponsors, to exert influence. The IOC has had to address numerous criticisms over the decades like internal scandals, the use of performance-enhancing drugs by Winter Olympians, as well as a political boycott of the Winter Olympic Games. Countries have used the Winter Olympic Games as well as the Summer Olympic Games to proclaim the superiority of their political systems.

Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. Its territory comprises one main island, 63 satellite islands and islets, and one outlying islet. The country is about one degree of latitude (137 kilometres or 85 miles) north of the equator, off the southern tip of the Malay Peninsula, bordering the Strait of Malacca to the west, the Singapore Strait to the south along with the Riau Islands in Indonesia, the South China Sea to the east and the Straits of Johor along with the State of Johor in Malaysia to the north.

In its early history, Singapore was a maritime emporium known as Temasek; subsequently, it was a major constituent of several successive thalassocratic empires. Its contemporary era began in 1819, when Stamford Raffles established Singapore as an entrepôt trading post of the British Empire. In 1867, Singapore came under direct British control as part of the Straits Settlements. During World War II, Singapore was occupied by Japan in 1942 and returned to Britain as a Crown colony following Japan's surrender in 1945. Singapore gained self-governance in 1959 and in 1963 became part of the new federation of Malaysia, alongside Malaya, North Borneo and Sarawak. Ideological differences led to Singapore's expulsion from the federation two years later; it became an independent sovereign country in 1965. After early years of turbulence and despite lacking natural resources and a hinterland, the nation rapidly developed to become one of the Four Asian Tigers.

Conquest involves the annexation or control of another entity's territory through war or coercion. Historically, conquests occurred frequently in the international system, and there were limited normative or legal prohibitions against conquest.

The onset and diffusion of nationalism (the belief that nation and state should be congruent), especially in the 19th century, made the idea of conquest increasingly unacceptable to popular opinion. Prohibitions against conquest were codified with the establishment of the League of Nations following World War I and of the United Nations at the end of World War II.

Norway, officially the Kingdom of Norway, is a Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of Norway. Bouvet Island, located in the Subantarctic, is a dependency, and not a part of the Kingdom; Norway also claims the Antarctic territories of Peter I Island and Queen Maud Land. Norway has a population of 5.6 million. Its capital and largest city is Oslo. The country has a total area of 385,207 square kilometres (148,729 sq mi). The country shares a long eastern border with Sweden, and is bordered by Finland and Russia to the northeast. Norway has an extensive coastline facing the Skagerrak strait, the North Atlantic Ocean, and the Barents Sea. In 2024, Norway was ranked the seventh happiest country in the world.

The unified kingdom of Norway was established in 872 as a merger of petty kingdoms and has existed continuously for 1,152–1,153 years. From 1537 to 1814, Norway was part of Denmark–Norway, and, from 1814 to 1905, it was in a personal union with Sweden. Norway was neutral during the First World War, and in the Second World War until April 1940 when it was invaded and occupied by Nazi Germany until the end of the war.

The European Coal and Steel Community (ECSC) was a European organization created after World War II to integrate Europe's coal and steel industries into a single common market based on the principle of supranationalism which would be governed by the creation of a High Authority made up of appointed representatives from the member states who would not represent their national interest, but would take and make decisions in the general interests of the Community as a whole. It was formally established in 1951 by the Treaty of Paris, signed by Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany and was generally seen as the first step in the process of European integration following the end of the Second World War in Europe. The organization is a spiritual predecessor to the contemporary European Union (EU) as its subsequent enlargement of both members and duties ultimately led to the creation of the EU.

The ECSC was first proposed via the Schuman Declaration by French foreign minister Robert Schuman on 9 May 1950 (commemorated in the EU as Europe Day), the day after the fifth anniversary of the end of World War II, to prevent another war between France and Germany. He declared "the solidarity in production" from pooling "coal and steel production" would make war between the two "not only unthinkable but materially impossible". The Treaty created a common market among member states that stipulated free movement of goods (without customs duties or taxes) and prohibited states from introducing unfair competitive or discriminatory practices.

In the study of history as an academic discipline, a primary source (also called an original source) is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. It serves as an original source of information about the topic. Similar definitions can be used in library science and other areas of scholarship, although different fields have somewhat different definitions.In journalism, a primary source can be a person with direct knowledge of a situation, or a document written by such a person.

Primary sources are distinguished from secondary sources, which cite, comment on, or build upon primary sources. Generally, accounts written after the fact with the benefit of hindsight are secondary. A secondary source may also be a primary source depending on how it is used. For example, a memoir would be considered a primary source in research concerning its author or about their friends characterized within it, but the same memoir would be a secondary source if it were used to examine the culture in which its author lived. "Primary" and "secondary" should be understood as relative terms, with sources categorized according to specific historical contexts and what is being studied.

The modern era or the modern period is considered the current historical period of human history. It was originally applied to the history of Europe and Western history for events that came after the Classical antiquity and the Middle Ages, often from around the year 1500, like the Reformation in Germany giving rise to Protestantism. Since the 1990s, it has been more common among historians to refer to the period after the Middle Ages and up to the 19th century as the early modern period. The modern period is today more often used for events from the 19th century until today. The time from the end of World War II (1945) can also be described as being part of contemporary history. The common definition of the modern period today is often associated with events like the French Revolution, the Industrial Revolution, and the transition from nationalism toward the liberal international order.

The modern period has been a period of significant development in the fields of science, politics, warfare, and technology. It has also been an Age of Discovery and globalization. During this time, the European powers and later their colonies, strengthened their political, economic, and cultural colonization of the rest of the world. It also created a new modern lifestyle and has permanently changed the way people around the world live.

Human rights are universally recognized moral principles or norms that establish standards of human behavior and are often protected by both national and international laws. These rights are considered inherent and inalienable, meaning they belong to every individual simply by virtue of being human, regardless of characteristics like nationality, ethnicity, religion, or socio-economic status. They encompass a broad range of civil, political, economic, social, and cultural rights, such as the right to life, freedom of expression, protection against enslavement, and right to education.

While ideas related to human rights predate modernity, the modern concept of human rights gained significant prominence after World War II, particularly in response to the atrocities of the Holocaust, leading to the adoption of the Universal Declaration of Human Rights (UDHR) by the United Nations General Assembly in 1948. This document outlined a comprehensive framework of rights that countries are encouraged to protect, setting a global standard for human dignity, freedom, and justice. The Universal Declaration of Human Rights (UDHR) has since inspired numerous international treaties and national laws aimed at promoting and protecting human rights worldwide.