Swedish-American inventor John Ericsson patented the screw propeller design.
Source
British explorer Captain James Cook departed on his second voyage from Plymouth.
The Treaty of Berlin was signed, granting Serbia, Montenegro, and Romania independence from Turkey.
The Live Aid concert raised funds and awareness for famine relief efforts in Africa.
Mexican grill chain Chipotle opened its first restaurant.
Donald Trump survived an assassination attempt during a campaign rally in Butler, Pennsylvania.