Englishman William Penn founded Philadelphia, Pennsylvania.
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US President Woodrow Wilson announced the country would never fight another country for territory again.
The first successful operation of conjoined twins joined at the head was completed in New Delhi, India.
Actor Wes Studi received the Governor's Award Oscar for Lifetime Acting Achievement, making him the first Native American to do so.
Taylor Swift released her fifth studio album, '1989.'
Turkmenistan declared independence from the Soviet Union.