In 1838, the British Parliament passed the first-ever law regulating working hours for children, known as the Factory Act, which limited workdays for children aged 9-13 to nine hours. 

In 1904, the Great Baltimore Fire destroyed over 1,500 buildings in Baltimore, Maryland. It led to improvements in firefighting techniques and the standardization of fire hydrant connections across the U.S.

The eruption of Mount Tambora in 1815 in Indonesia caused the "Year Without a Summer" in 1816, leading to global crop failures and food shortages.

In 1921, the Tulsa Race Massacre saw one of the wealthiest Black communities in the U.S., known as Black Wall Street, destroyed by a violent white mob.

In 1956, the Suez Crisis unfolded when Egypt's President Nasser nationalized the Suez Canal, leading to a military intervention by Israel, France, and the UK, and a significant diplomatic confrontation during the Cold War era.