What happend on 31st January

This is day of

Jackie Robinson's birthday is observed. He was the first African American to play in Major League Baseball in the modern era.

1950

U.S. President Harry S. Truman announces the development of the hydrogen bomb, a significant advancement in nuclear weaponry.

1919

Jackie Robinson, the pioneering figure who integrated Major League Baseball, is born in Cairo, Georgia.

1865

The United States Congress ratifies the 13th Amendment, officially ending slavery in the United States.