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Polity · 1830 – present

Belgium

比利时

Polity · 1830 – present · Century precision · 50.85° N, 4.35° E

Belgium, officially the Kingdom of Belgium, lies in the coastal Low Countries between the Netherlands, Germany, Luxembourg, France and the North Sea, thirty thousand square kilometres crowded with almost twelve million people, the densest-but-sixth of Europe, round the capital Brussels with Antwerp, Ghent, Liège and Bruges. The southern Netherlands rose in 1830 against Dutch King William, chose Leopold of Saxe-Coburg as Leopold I in 1831, and won recognition as a perpetually neutral kingdom by the Treaty of London in 1839. Language made the state: sixty percent Flemish Dutch-speakers in Flanders, forty percent French-speakers in Wallonia, a German sliver in the east, three regions and six governments in permanent negotiation. Coal, steel, glass and diamonds paid for trams, boulevards and a Congo empire under Leopold II. Neutrality failed twice: German armies marched through in 1914 and 1940, and Albert I's stand on the Yser and Leopold III's surrender framed two occupations. Liberated in 1944, Belgium became a founder of the European Union.

Key facts

  • The Belgian Revolution of 1830 broke the southern provinces away from the United Kingdom of the Netherlands
  • Leopold I took the throne in 1831 and the Treaty of London recognised the neutral kingdom in 1839
  • Flemish, Walloon and Brussels regions with Dutch, French and German communities make a six-government federation
  • Brussels hosts the European Commission, Council and Parliament seats as the EU's de facto capital
  • Germany violated Belgian neutrality in 1914 and again in 1940, occupying the kingdom in both world wars

Record

Capital: Brussels

Government: federal parliamentary monarchy; federation

Language: Dutch; French; German

Currency: euro; Belgian franc

Population: 11,825,551 (2025)

Notable figures

  • Leopold I of Belgium
  • Leopold II of Belgium
  • Albert I of Belgium

Sources

Single source — details may be incomplete.

  1. Wikidata Q31 — BelgiumCC0-1.0
CiteWhenAtlas — History in Motion, “Belgium” (2026). https://whenatlas.com/entity/polity.q31

Reuse this data: open dataset (GeoJSON / CSV, CC BY 4.0)

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