Despite running out of oxygen, Jim Whittaker became the first American to reach the summit of Mount Everest.
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A national strike began in the United States, calling for an eight-hour workday instead of 12 hours.
The All-China Federation of Trade Unions was founded.
Construction started on Chicago's first-ever skyscraper for the Home Insurance Company of New York.
Same-sex marriage was legalized in Sweden.
Levi Strauss was founded.
