On this day for the United States
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Events
- 1749 – King George II of Great Britain grants the Ohio Company a charter of land around the forks of the Ohio River.
- 1780 – New England's Dark Day: A combination of thick smoke and heavy cloud cover causes complete darkness to fall on Eastern Canada and the New England area of the United States at 10:30 AM.
- 1828 – U.S. President John Quincy Adams signs the Tariff of 1828 into law, protecting wool manufacturers in the United States.
- 1848 – Mexican–American War: Treaty of Guadalupe Hidalgo – Mexico ratifies the treaty thus ending the war and ceding California, Nevada, Utah and parts of five other modern–day U.S. states to the USA for USD $15 million.
- 1864 – American Civil War: Battle of Spotsylvania Court House ends.
- 1921 – The Emergency Quota Act passes the U.S. Congress establishing national quotas on immigration
- 1943 – World War II: British Prime Minister Winston Churchill and U.S. President Franklin D. Roosevelt set Monday, May 1, 1944 as the date for the cross-English Channel landing (D-Day would later be delayed over a month due to bad weather).
- 1962 – A birthday salute to U.S. President John F. Kennedy takes place at Madison Square Garden, New York. The highlight is Marilyn Monroe's infamous rendition of Happy Birthday.