It happened on a… April 25

The U.S. Hubble Space Telescope was placed into Earth's orbit. It was released by the space shuttle Discovery.

1st submerged circumnavigation of Earth completed by USS submarine Triton in 60 days, 21 hours.

The St. Lawrence Seaway, linking the North American Great Lakes and the Atlantic Ocean, officially opens to shipping.

Quebec women allowed to vote and run for office in provincial elections, 22 years after women were granted the federal vote.

Sigmund Freud, father of Psychology, opens practice at Rathausstrasse 7, Vienna.

Work began on the Suez Canal in Egypt.

The guillotine was first used to execute highwayman Nicolas J. Pelletier.

Daniel Defoe publishes “Robinson Crusoe”, regarded as the 1st English novel.