On this day: February 25

Published On: Feb 24 2013 10:08:24 PM CST   Updated On: Feb 25 2013 01:00:00 AM CST

Samuel Colt patents his revolver, the first black U.S. senator takes his seat, Muhammad Ali wins his first heavyweight title, and Ferdinand Marcos flees the Philippines, all on this day.

OTD February 25 - 16th Amendment
11 / 40
istockphoto/lvsigns

1913: The 16th Amendment to the U.S. Constitution is declared ratified, authorizing a graduated federal income tax.

Upload Photos / Videos