As per Google Doodle, on this day in 1831, Leopold I took the constitutional oath, to become the first king of Belgium.. The Belgian royal family kick starts the National Belgium Day, with a ...

Belgian National Day commemorates an event that occurred July 21, 1831. On that day, Leopold of Saxe-Cobourg swore allegiance to the new Belgian Constitution and became the first King of the Belgians.

Belgium was indeed created in 1831 and the only official language in Belgium was French, because the rich industrials and the men of power only knew and only spoke French.