On This Day: March 29th

Mexican-American War: United States forces led by General Winfield Scott take Veracruz after a siege.

King Gustav IV Adolf of Sweden abdicates after a coup d'état.

At the Diet of Porvoo, Finland's four Estates pledge allegiance to Alexander I of Russia, commencing the secession of the Grand Duchy of Finland from Sweden.

Construction is authorized of the Great National Pike, better known as the Cumberland Road, becoming the first United States federal highway.

King Gustav III of Sweden dies after being shot in the back at a midnight masquerade ball at Stockholm's Royal Opera 13 days earlier.

Treaty of Saint-Germain is signed returning Quebec to French control after the English had seized it in 1629.

The city of Salvador, Bahia, the first capital of Brazil, is founded.

Battle of Towton: Edward of York defeats Queen Margaret to become King Edward IV of England, bringing a temporary stop to the Wars of the Roses.

The Ottoman Empire under Murad II captures Thessalonica from the Republic of Venice.

Pope Innocent II issues the bull Omne datum optimum in which he endorses the Knights Templar and approves the Templar Rule.