The Marianna Coal Mine in Pennsylvania exploded and killed 154 men.
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Lady Nancy Astor became the first woman to become a member of the British House of Commons.
Explorer Richard E. Byrd became the first person to fly over the South Pole.
The Chicago Times-Herald sponsored the United States' first-ever car race, with the winning car going an average of 7 miles per hour.
The Times of London was first issued.
Women voted in a general election for the first time in New Zealand.
