March 1:
A.D. 293: Tetrarchy is introduced in the Roman Empire by Emperor Maximianus.
A.D. 743: Export of slaves from Christian to heathen territory is prohibited.
A.D. 1260: Damascus is conquered by Halagu Khan, grandson of Genghis Khan.
March 2:
A.D. 871: Ethelred van Wessex defeats the invading Danish army in the battle of Marton.
A.D. 1807: U.S. Congress bans the slave trade, effective January 1, 1808.
A.D. 1836: The Republic of Texas declares independence from Mexico.