Neutral Moresnet. French: Moresnet Neutre. German: Neutral-Moresnet. Dutch: Neutraal-Moresnet. Esperanto: Neutrala Moresneto neutral zone 1816-1920 Capital Kelmis Languages Esperanto · French · German · Dutch Government Condominium Mayor • 1817–1859 Arnold Timothée de Lasaulx • 1918–1920 Pierre Grignard History : Agreement of Aachen June 26, 1816 • Annexation by Belgium January 10, 1920 Area • 1900 3.5 km² (1 sq mi) • 1914 3.6 km² (1 sq mi) Population • 1900 est. 3,000 Density 857.1 /km² (2,220 /sq mi) • 1914 est. 3,500 Density 972.2 /km² (2,518 /sq mi) Neutral Moresnet was a small Belgian-Prussian condominium that existed from 1816 to 1920 between present-day Belgium and Germany. Its northernmost border point at the Vaalserberg connected it to a quadripoint shared additionally with the Dutch Province of Limburg, which today is known as Three Country Point. Prior to Belgian independence in 1830, the territory was a Dutch–Prussian condominium. During the First World War, the territory was annexed into Germany, although the allies did not recognise the annexation. The former territory is now in the Belgian municipality of Kelmis. Today, it is especially of interest to Esperantists because of initiatives to found an Esperanto speaking state, named Amikejo (lit. "friendship place"), on the territory in the early 20th century.
Source:Wikipedia.