The Netherlands in the context of "Adolphe, Grand Duke of Luxembourg"

The Hanseatic League, commonly called The Hansa, was a medieval commercial and defensive network of merchant guilds and market towns in Central and Northern Europe. Growing from Lübeck and a few other North German towns in the late 12th century, the League expanded between the 13th and 15th centuries and ultimately encompassed nearly 200 settlements across eight modern-day countries, ranging from what is now Estonia in the northeast to the Netherlands in the west, and extended inland as far south as Cologne.

The League began as a collection of loosely associated groups of German traders and towns aiming to expand their commercial interests, including protection against robbery. Over time, these arrangements evolved into the League, offering traders toll privileges and protection on affiliated territory and trade routes. Economic interdependence and familial connections among merchant families led to deeper political integration and the reduction of trade barriers. This gradual process involved standardizing trade regulations among Hanseatic Cities.

The German invasion of Luxembourg was part of Case Yellow (German: Fall Gelb), the German invasion of the Low Countries—Belgium, Luxembourg and the Netherlands—and France during World War II. The battle began on 10 May 1940 and lasted just one day. Facing only light resistance, German troops quickly occupied Luxembourg. The Luxembourgish government, and Grand Duchess Charlotte, managed to escape the country and a government-in-exile was created in London.

Lotharingia was a historical region and an early medieval polity that existed during the late Carolingian and early Ottonian, from the middle of the 9th to the middle of the 10th century. It was established in 855 by the Treaty of Prüm as a distinct kingdom within the Carolingian Empire, but abolished already in 869-870 when it was divided by the Treaty of Meerssen. It was territorially reunited in 880 by the Treaty of Ribemont, and reestablished as a kingdom from 895 to 900. Since 903 it was organized as a duchy, which existed up to 959, when it was divided into two distinct duchies: Upper Lotharingia (southern half), and Lower Lotharingia (northern half). The regional name Lotharingia means, approximately, "the land of Lothair", and was derived from the name of its first ruler, king Lothair II, who received this territory as his share of the Kingdom of Middle Francia. The region comprised present-day Lorraine (France), Luxembourg, parts of modern Germany west of the Rhine, most of Belgium, and the Netherlands.

Lotharingia resulted from the tripartite division in 855 of the kingdom of Middle Francia, which itself was formed after the threefold division of the Carolingian Empire by the Treaty of Verdun of 843. Conflict between East and West Francia over Lotharingia was based on the fact that these were the old Frankish homelands of Austrasia, so possession of them was a matter of great prestige to their kings as true claimant of Frankish imperial legacy.

The Scientific-Humanitarian Committee (German: Wissenschaftlich-humanitäres Komitee, WhK) was a transnational advocacy group and civil rights organization founded by Magnus Hirschfeld in Berlin in May 1897, to campaign for the legal rights and social recognition of lesbian, gay, bisexual, and transgender (LGBT) people, and against their institutionalized discrimination and persecution in Western societies. It was the first LGBT rights organization in history. The motto of the organization was Per scientiam ad justitiam ("Through science to justice"), and the committee included representatives from various professions. The committee's membership peaked at about 700 people. In 1929, Kurt Hiller took over as chairman of the group from Hirschfeld. At its peak, the WhK had branches in approximately 25 cities in Weimar Germany, the Republic of Austria, and the Netherlands.

Martin Hugo Löb (German: [løːp]; 31 March 1921 – 21 August 2006) was a German mathematician. He settled in the United Kingdom after the Second World War and specialised in mathematical logic. He moved to the Netherlands in the 1970s, where he remained in retirement. He is perhaps best known for having formulated Löb's theorem in 1955.

Igor Vsevolodovich Girkin (Russian: И́горь Все́володович Ги́ркин, IPA: [ˈiɡərʲ ˈfsʲevələdəvʲɪdʑ ˈɡʲirkʲɪn]; born 17 December 1970), also known by the alias Igor Ivanovich Strelkov (Russian: И́горь Ива́нович Стрелко́в, IPA: [ˈiɡərʲ ɪˈvanəvʲɪtɕ strʲɪlˈkof]), is a Russian army veteran and former Federal Security Service (FSB) officer who played a key role in the Russian annexation of Crimea, and then in the Donbas War as an organizer of militant groups in the Donetsk People's Republic (DPR). In 2024 he was convicted on charges of inciting extremism. Earlier he received a life sentence in absentia in the Netherlands for his role in downing the Malaysia Airlines Flight 17.

Girkin admitted responsibility for sparking the Donbas War in eastern Ukraine when, in April 2014, he led a group of armed Russian militants who seized Sloviansk. His role in the siege gained him influence and attention, and he was appointed to the position of Minister of Defense in the Donetsk People's Republic, a puppet state of Russia. Girkin was charged with terrorism by Ukrainian authorities. He has also been sanctioned by the European Union, United States, United Kingdom, Australia, Japan, Canada and Switzerland for his leading role in the war in eastern Ukraine.

Expressionist architecture was an architectural movement in Europe during the first decades of the 20th century in parallel with the expressionist visual and performing arts that especially developed and dominated in Germany. Brick Expressionism is a special variant of this movement in western and northern Germany, as well as in the Netherlands (where it is known as the Amsterdam School).

A ballroom or ballhall is a large room inside a building, the primary purpose of which is holding large formal parties called balls. Traditionally, most balls were held in private residences; many mansions and palaces, especially historic mansions and palaces, contain one or more ballrooms. In other large houses, a large room such as the main drawing room, long gallery, or hall may double as a ballroom, but, a good ballroom should have the right type of flooring, such as hardwood flooring or stone flooring (usually marble or stone).. For most styles of modern dance, a wooden sprung floor offers the best surface.

In later times the term ballroom has been used to describe nightclubs where customers dance, the Top Rank Suites in the United Kingdom for example were also often referred to as ballrooms. The phrase "having a ball" has grown to encompass many events where person(s) are having fun, not just dancing.

The clipper route was derived from the Brouwer Route and was sailed by clipper ships between Europe and the Far East, Australia and New Zealand. The route, devised by the Dutch navigator Hendrik Brouwer in 1611, reduced the time of a voyage between The Netherlands and Java, in the Dutch East Indies, from almost 12 months to about six months, compared to the previous Arab and Portuguese monsoon route.

The clipper route ran from west to east through the Southern Ocean, making use of the consistently strong westerly winds called the Roaring Forties. Many ships and sailors were lost in the heavy conditions along the route, particularly at Cape Horn, which the clippers had to round on their return to Europe.