What river valley did France and Britain fight over?

France and Britain fought over the Ohio River Valley during the 18th century, particularly in the context of the French and Indian War (1754-1763). The region was crucial for trade and expansion, leading to conflicts between French forces and British colonists, as both nations sought to control the lucrative fur trade and assert territorial claims. This struggle was part of the larger conflict between France and Britain for dominance in North America.