National Day of Belgium (21/07)

National Day of Belgium (Netherlands Nationale feestdag van België, French Fête nationale belge, German Belgischer Nationalfeiertag) is the main holiday of the country and is celebrated annually on July 21, since 1890, in honor of a significant date.

On this day in 1831, Leopold I (Leopold of Saxe-Coburg) ascended the royal throne by election. The new King Leopold I swore an oath to the Belgian parliament on loyalty to the Constitution of the country.

In November 1830, elections were held for the National Congress. The result of the work of the congress was the adoption of the Declaration of Independence of Belgium and the Constitution of the country. In February 1831, Belgium was declared a constitutional monarchy with a bicameral parliament.