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1790 – Congress declares the city of Washington in the District of Columbia, the permanent capital of the United States.

1867 – D.R. Averill of Ohio patents ready-mixed paint.

1912 – Naval torpedo launched from an airplane patents by B.A. Fiske.

1926 – National Geographic takes 1st natural-color undersea photos.

1936 – 1st x-ray photo of arterial circulation, Rochester, NY.

1945 – 1st test detonation of an atomic bomb, Trinity Site, Alamogordo, New Mexico as part of the US Manhattan project.

1946 – US court martial sentences 46 members of the SS to death (Battle of Bulge crimes) in Dachau.

1956 – Last Ringling Bros, Barnum & Bailey Circus under a canvas tent.

1957 – US Marine Major John Glenn sets transcontinental speed record (03:28:08).

1967 – Prison brawl ignites barracks, killing 37 (Jay, Florida)

1969 – Apollo 11 launched, carrying 1st men to land on Moon.

1972 – Smokey Robinson & Miracles final live performance.

1973 – During Watergate hearings, Butterfield reveals existence of tapes.

1980 – Ronald Reagan nominated for US President by Republicans in Detroit.

1988 – Carl Lewis runs a wind-assisted 100m in 9.78 seconds.

1988 – Florence Joyner runs 100m in women’s world record 10.49 seconds.

1999 – John F. Kennedy, Jr., his wife Carolyn Bessette Kennedy, and sister-in-law Lauren Bessette are killed in a plane crash off the coast of Martha’s Vineyard. The Piper Saratoga aircraft was piloted by Kennedy.

2004 – Millennium Park, considered the first and most ambitious architectural project in the early 21st century for Chicago, is opened to the public by Mayor Richard M. Daley.

2015 – Shootings in Chattanooga at a US military recruitment center and a naval reserve training center kills 5 and injures others.

2016 – Republican presidential nominee Donald Trump announces Indiana governor Mike Pence as his Vice Presidential running mate.

2018 – US President Donald Trump appears to accept the word of Russian President Vladimir Putin over US intelligence services about Russian meddling in the 2016 US election, in an interview after the two leader’s Helsinki Summit.

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