The Avengers premiered in Los Angeles, California, US.
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The War of the Roses ended with King Henry VI surrendering to King Edward IV in London.
The US Navy bought their first-ever submarine called the USS Holland or SS-1.
The RMS Titanic departed Queenstown, Ireland, for its fatal journey to New York.
President Ronald Reagan returned home from the hospital after narrowly escaping death after someone shot him on March 30.
Apollo 13 was launched successfully but ran into difficulties two days later.
