Colorado became the 38th state to join the United States of America.
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Astronauts on Apollo 15 discovered a rock that could date back to the birth of the moon.
While sailing in the Atlantic Ocean, Christopher Columbus discovered Venezuela, which he called 'Isla Santa.'
The US won gold in the first-ever women's soccer at the Olympics.
Nintendo released 'Kirby's Dream Land' for the Game Boy in North America.
The Mississippi River Bridge collapsed during rush hour.
