Treaty of Paris cedes Northwest Territory to Britain

In 1763, the territory that would become Ohio was ceded by France to Great Britain as part of the Treaty of Paris, which ended the French and Indian War. While the English issued the Proclamation of 1763 prohibiting white settlement west of the Appalachian Mountains, this proclamation was widely ignored and the area was gradually settled by American Colonists moving west.

(Image courtesy of CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1255728)