1. The Boston Massacre occurred on March 5, 1770, which sparked further tensions between the American colonists and the British government leading to the American Revolution.

2. On March 5, 1868, the U.S. Senate voted to acquit President Andrew Johnson in his impeachment trial by just one vote, preventing his removal from office.

3. In 1946, Winston Churchill gave his famous "Iron Curtain" speech at Westminster College in Fulton, Missouri, which warned of Soviet expansionism and marked the beginning of the Cold War. March 5 was later declared "Winston Churchill Day" in the state of New York.

4. The New York Central Railroad's 20th Century Limited, one of the most luxurious trains in the world, made its inaugural run on March 5, 1902, offering passengers amenities such as gourmet dining and private compartments.

5. The first American woman to win an Olympic gold medal, Margaret Ives Abbott, was born in Calumet, Michigan on March 5, 1878. She won the golf tournament at the 1900 Summer Olympics in Paris, which was the first year women were allowed to compete in Olympic events.