The Society for American Baseball Research was founded in Cooperstown, New York.
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Ecuador declared independence from Spain.
Portuguese explorer Diogo Dias became the first European to set foot on Madagascar.
Missouri entered the United States Union and became the 24th state.
The Paluweh volcano in Indonesia erupted and claimed six lives.
After a 15-month-long journey from earth, NASA's Magellan went into orbit around Venus and began to map the planet.
