Theodore Roosevelt became the first US president to visit another country while in office, visiting Puerto Rico and Panama.
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The Berlin Wall began to fall.
Holy Emperor Louis IV of Bavaria defeated Frederick I of Austria during the Battle of Gammelsdorf.
NASA launched the Apollo 4 test spacecraft to test the Saturn V rocket for the first time.
The European Space Agency launched the Venus Express, the first European spacecraft to reach Venus.
The Mayflower, filled with Puritan Pilgrims, spotted land at Cape Cod, Massachusetts.