◆ On this day

October 31

4 sourced moments from October 31 in history: Martin Luther's 95 Theses sparked the Reformation (1517); Magician Harry Houdini died on Halloween (1926); Mount Rushmore was declared complete (1941), plus 1 more.

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4 things happened on October 31

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2011 Geography · Demographics

World Population Reached Seven Billion

On a single symbolic day in 2011, the United Nations declared that humanity had grown to a milestone seven billion people.

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1941 Geography · Landmarks & Wonders

Mount Rushmore was declared complete

After fourteen years, four presidents, and a fortune that ran dry, the carving of Mount Rushmore was declared finished.

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1926 Culture & Arts · Performing Arts

Magician Harry Houdini died on Halloween

The world's most famous escape artist met one snare he could not slip: a ruptured appendix that killed him on Halloween.

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1517 Religion & Beliefs · Major Religions

Martin Luther's 95 Theses sparked the Reformation

A monk's list of debate points against the sale of indulgences became, almost by accident, the opening shot of the Protestant Reformation.

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