Wikipedia:Selected anniversaries/May 1
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This is a list of selected May 1 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 1: Ascension Thursday (Western Christianity, 2008); Yom HaShoah in Israel (2008); May Day; International Workers' Day; Beltane in Ireland and Scotland
- 1707 – The Kingdoms of England and Scotland merged to form the Kingdom of Great Britain, a single kingdom encompassing the entire island of Great Britain with a single parliament and government based in Westminster.
- 1840 – The United Kingdom of Great Britain and Ireland first issued the Penny Black (pictured), the first official adhesive postage stamp.
- 1893 – The World's Columbian Exposition, a World's Fair to celebrate the 400th anniversary of Christopher Columbus' discovery of the New World, opened in Chicago.
- 1898 – The American Asiatic Squadron under Commodore George Dewey defeated the Spanish Pacific Squadron under Admiral Patricio Montojo at the Battle of Manila Bay, the first engagement of the Spanish-American War.
- 1956 – A doctor in Japan reported an "epidemic of an unknown disease of the central nervous system", marking the official discovery of Minamata disease.

