Italy used its current tri-colored flag for the first time.
Source
The first telephone call was made across the Atlantic – from London to New York.
President Truman announced to the people of America that they successfully developed a hydrogen bomb.
Beyoncé and Jay-Z welcomed their daughter, Blue Ivy Carter, into the world.
Black men were chased away by gunmen after trying to rescue white survivors during a mine explosion.
The distress signal 'CQD' was established.
