The Republican Party nominated Abraham Lincoln for president at the 1860 Republican National Convention.
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Northern Somalia declared its independence, becoming the unrecognized de facto Republic of Somaliland.
India had their first successful nuclear bomb test.
The Chinese Theater opened in Hollywood, California, built in an Exotic Revival style architecture.
Britain declared war on France after Napoleon Bonaparte continued interfering in Italy and Switzerland.
President Franklin D. Roosevelt signed Tennessee Valley Act to build dams.