Developed country in the context of "Working-class"

Global health is the health of populations in a worldwide context; it has been defined as "the area of study, research, and practice that places a priority on improving health and achieving equity in health for all people worldwide". Problems that transcend national borders or have a global political and economic impact are often emphasized. Thus, global health is about worldwide health improvement (including mental health), reduction of disparities, and protection against global threats that disregard national borders, including the most common causes of human death and years of life lost from a global perspective.

Global health is not to be confused with international health, which is defined as the branch of public health focusing on developing nations and foreign aid efforts by industrialized countries.

Oceania (UK: /ˌoʊsiˈɑːniə, ˌoʊʃi-, -ˈeɪn-/ OH-s(h)ee-AH-nee-ə, -⁠AY-, US: /ˌoʊʃiˈæniə, -ˈɑːn-/ OH-shee-A(H)N-ee-ə) is a geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its continental landmass. Spanning the Eastern and Western hemispheres, at the centre of the water hemisphere, Oceania is estimated to have a land area of about 9,000,000 square kilometres (3,500,000 sq mi) and a population of around 46.3 million as of 2024. Oceania is the smallest continent in land area and the second-least populated after Antarctica.

Oceania has a diverse mix of economies from the highly developed and globally competitive financial markets of Australia, French Polynesia, Hawaii, New Caledonia, and New Zealand, which rank high in quality of life and Human Development Index, to the much less developed economies of Kiribati, Papua New Guinea, Tuvalu, Vanuatu, and Western New Guinea. The largest and most populous country in Oceania is Australia, and the largest city is Sydney. Puncak Jaya in Indonesia is the highest peak in Oceania at 4,884 m (16,024 ft).

The Organisation for Economic Co-operation and Development (OECD; French: Organisation de coopération et de développement économiques, OCDE) is an intergovernmental organisation with 38 member countries, founded in 1961 to stimulate economic progress and world trade. It is a forum whose member countries describe themselves as committed to democracy and the market economy, providing a platform to compare policy experiences, seek answers to common problems, identify good practices, and coordinate domestic and international policies of its members.

The majority of OECD members are generally regarded as developed countries, with high-income economies, and a very high Human Development Index.

The working class refers to a group of people in a social hierarchy, typically defined by earning wages or salaries through their ability to work. Members of the working class rely primarily upon earnings from wage labour. Most common definitions of "working class" in use in the United States limit its membership to workers who hold blue-collar and pink-collar jobs, or whose income is insufficiently high to place them in the middle class, or both. However, socialists define "working class" to include all workers who fall into the category of requiring income from wage labour to subsist; thus, this definition can include almost all of the working population of industrialized economies.

Japan has a highly developed mixed economy, often referred to as an East Asian model. According to the IMF forecast for 2025, it will be the fourth-largest economy in the world by nominal GDP and the fifth-largest by purchasing power parity (PPP) by the end of the year. It constituted 3.7% of the world's economy on a nominal basis in 2024. According to the same forecast, the country's nominal per capita GDP (PPP) will be $56,440 (2025). Due to a volatile currency exchange rate, Japan's nominal GDP as measured in American dollars fluctuates sharply.

A founding member of the G7 and an early member of the OECD, Japan was the first country in Asia to achieve developed country status. In 2024, Japan was the sixth-largest in the world as an importer and eight-largest as an exporter. The country also has the world's fourth-largest consumer market. Japan used to run a considerable trade surplus, but the decline of the manufacturing sector since the 1980s and increased fossil fuel imports after the Fukushima nuclear accident in 2011 have changed this trend in recent years. Being the world's largest creditor nation, Japan has a considerable net international investment surplus. The country has the world's second-largest foreign-exchange reserves, worth $1.4 trillion. Japan has the third-largest financial assets in the world, valued at $12 trillion, or 8.6% of the global GDP total as of 2020. Japan has a highly efficient and strong social security system, which comprises roughly 23.5% of GDP. The Tokyo Stock Exchange is the world's fourth-largest stock exchange by market capitalisation as of 2025.

South Korea has a highly developed mixed economy. By nominal GDP, the economy was worth ₩2.61 quadrillion (US$1.87 trillion). It has the 4th largest economy in Asia and the 13th largest in the world as of 2025. South Korea is notable for its rapid economic development from an underdeveloped nation to a developed, high-income country in a few decades. This economic growth has been described as the Miracle on the Han River, which has allowed it to join the OECD and the G20. It is included in the group of Next Eleven countries as having the potential to play a dominant role in the global economy by the middle of the 21st century. Among OECD members, South Korea has a highly efficient and strong social security system; social expenditure stood at roughly 15.5% of GDP. South Korea spends around 4.93% of GDP on advanced research and development across various sectors of the economy.

South Korea's education system and the establishment of a motivated and educated populace were largely responsible for spurring the country's high technology boom and economic development. South Korea began to adapt an export-oriented economic strategy in the 1960s to fuel its economy. In 2022, South Korea was the ninth largest exporter and ninth largest importer in the world. The Bank of Korea and the Korea Development Institute periodically release major economic indicators and economic trends of the economy of South Korea.

Taiwan is a highly developed free-market economy. It is the 8th largest in Asia and 21st-largest in the world by purchasing power parity, allowing Taiwan to be included in the advanced economies group by the International Monetary Fund. Taiwan is notable for its rapid economic development from an agriculture-based society to an industrialized, high-income country. This economic growth has been described as the Taiwan Miracle. It is gauged in the high-income economies group by the World Bank. Taiwan is one of the leading producers of computer microchip and high-tech electronics.

Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to the south, and the North Sea to the west. Belgium covers an area of 30,689 km (11,849 sq mi) and has a population of more than 11.8 million; its population density of 383/km (990/sq mi) ranks 22nd in the world and sixth in Europe. The capital and largest metropolitan region is Brussels; other major cities are Antwerp, Ghent, Charleroi, Liège, Bruges, Namur, and Leuven.

Belgium is a parliamentary constitutional monarchy with a complex federal system structured on regional and linguistic grounds. The country is divided into three highly autonomous regions: the Flemish Region (Flanders) in the north, the Walloon Region (Wallonia) in the south, and the Brussels-Capital Region in the middle. Belgium is also home to two main linguistic communities: the Dutch-speaking Flemish Community, which constitutes about 60 percent of the population, and the French-speaking French Community, which constitutes about 40 percent of the population; a small German-speaking Community, comprising around one percent of the population, exists in the East Cantons. Belgium's linguistic diversity and related political conflicts are reflected in its complex system of governance, made up of six different governments. Belgium is a developed country with an advanced high-income economy. It is one of the six founding members of the European Union, with its capital of Brussels serving as the de facto capital of the EU, hosting the official seats of the European Commission, the Council of the European Union, the European Council, and one of two seats of the European Parliament (the other being Strasbourg). Brussels also hosts the headquarters of many major international organizations, such as NATO.

A developing country is a country with a less-developed industrial base and a lower Human Development Index (HDI) relative to developed countries. However, this definition is not universally agreed upon. There is also no clear agreement on which countries fit this category. The terms low-and middle-income country (LMIC) and newly emerging economy (NEE) are often used interchangeably but they refer only to the economy of the countries. The World Bank classifies the world's economies into four groups, based on gross national income per capita: high-, upper-middle-, lower-middle-, and low-income countries. Least developed countries, landlocked developing countries, and small island developing states are all sub-groupings of developing countries. Countries on the other end of the spectrum are usually referred to as high-income countries or developed countries.

There are controversies over the terms' use, as some feel that it perpetuates an outdated concept of "us" and "them". In 2015, the World Bank declared that the "developing/developed world categorization" had become less relevant and that they would phase out the use of that descriptor. Instead, their reports will present data aggregations for regions and income groups. The term "Global South" is used by some as an alternative term to developing countries.