The US celebrated the opening of its very first drive-in cinema.
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The Soviet Union's ill-fated Soyuz 11 mission was launched from the Baikonur Cosmodrome.
The US started plans to construct its first nuclear battlefield weapon.
The French ship named Aurore transported the first African slaves from Senegambia, West Africa, to Louisiana, US.
Xi'an, China, introduced a pedestrian lane for people who walk while looking at their phones.
Alaska Airlines started operating.
