Marvin Gaye’s “What’s Going On” single was released.
The song was inspired by police brutality witnessed in the 1970s.
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The US published its first book on Geology – 'Observations on the Geology of the United States' by William Maclure.
'In Old Arizona' became the first full-length talking motion picture filmed outdoors.
The USA's first African-American President, Barack Obama, conducted his first address.
US hostages were released in Iran after 444 days.
Feminist Elizabeth Cady Stanton became the first woman to testify before Congress.
