The Holy Emperor Charles V and King Henry VIII of England became allies against France.
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The Armenian-Turkish land border opened for the first time in 35 years.
Researchers announced that gravitational waves had been discovered.
The comic book 'Archie' was first published.
A steamboat patent was granted to the American engineer and inventor Robert Fulton.
The Boston Bicycle Club was formed, becoming the first cycling club in the United States.
