What disagreement between the French and British in the colonies caused a war?

The disagreement between the French and British in the American colonies primarily stemmed from competing territorial claims in the Ohio River Valley. Both nations sought to expand their influence and control over this lucrative region, leading to conflicts over land and resources. Tensions escalated into armed confrontations, culminating in the outbreak of the French and Indian War (1754-1763), which was part of the larger Seven Years' War. Ultimately, the war resulted in significant territorial gains for the British but also set the stage for future colonial discontent.