- May 17 Britain declares war on France (7 Years' or French & Indian War)
- May 18 Great Britain declares war on France at the start of the Seven Years' War
- Jun 4 Quakers leave assembly of Pennsylvania
- Jun 20 Black Hole of Calcutta: 146 British soldiers, Anglo-Indian soldiers and Indian civilians are imprisoned in a small dungeon in Calcutta, India where most die from suffocation and heat exhaustion
- Jun 20 Siraj ud-Daulah Nawab of Bengal takes Calcutta from the British
- Jun 27 French fleet conquer St Philips Castle of Minorca
- Jul 30 Bartolomeo Rastrelli presents the newly-built Catherine Palace to Empress Elizabeth and her courtiers in Russia
- Aug 14 French capture Fort Oswego, NY
- Aug 29 England & France meet in war
- Aug 29 Prussian Libya occupies Saxson: beginning 7 years War
- Sep 8 Kittanning Expedition:s 30-40 Lenape Indians killed by Pennsylvania Provincial troops during French and Indian War
- Sep 22 Nassau Hall opens at Princeton University
- Oct 15 Saxon army surrenders to Prussia
Historic Event
Oct 31 Giacomo Casanova escapes from prison in Venice by climbing onto the roof
