WHAT ALL HAPPENED MARCH TO OCTOBER 1820
Find out what all happened March to October 1820

Guayaquil declares independence from Spain. (9. October 1820)

Alexander Ypsilantis is declared leader of Filiki Eteria, a secret organization to overthrow Ottoman rule over Greece. (12. April 1820)

The Venus de Milo is discovered on the Aegean island of Melos. (8. April 1820)

HMS Beagle, the ship that will take Charles Darwin on his scientific voyage, is launched. (11. May 1820)

Constitutionalist insurrection at Oporto, Portugal. (24. August 1820)

Maine becomes the 23rd U.S. state. (15. March 1820)

The Missouri Compromise is signed into law by President James Monroe. The compromise allows Missouri to enter the Union as a slave state, brings Maine into the Union as a free state, and makes the rest of the northern part of the Louisiana Purchase territory slavery-free. (6. March 1820)

Constitutionalist revolution in Lisbon, Portugal. (15. September 1820)

The U.S. Congress passes the Missouri Compromise. (3. March 1820)