Wikipedia:Selected anniversaries/May 10
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This is a list of selected May 10 anniversaries that appears on the "On this day" section of the Main Page. To suggest a new item, in most cases you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition may be controversial, or on a day that is or soon will be on the Main Page, please post your suggestion on the talk page instead.
To report an error when this appears on the Main Page, see Main Page errors.May 10: World Fair Trade Day (2008); Mother's Day in various countries; Constitution Day in the Federated States of Micronesia
- 1503 – Christopher Columbus and his crew became the first Europeans to visit the Cayman Islands, naming them Las Tortugas after the numerous sea turtles there.
- 1857 – The Sepoy Rebellion broke out in colonial India, threatening the rule of the British East India Company.
- 1869 – The First Transcontinental Railroad of North America was completed with the golden spike ceremony in Promontory Summit, Utah.
- 1924 – J. Edgar Hoover (pictured) became the first director of the U.S. Federal Bureau of Investigation.
- 1940 – British Prime Minister Neville Chamberlain resigned and formally recommended Winston Churchill as his successor.

