Final answer:
The three reasons for the rivalry between England and France in the Ohio Valley were control of territory, strategic significance, and conflicts with Native American tribes.
Step-by-step explanation:
The three reasons for the rivalry between England and France in the Ohio Valley were:
Territorial Expansion: Both England and France sought to expand their territorial holdings in North America. The Ohio Valley was a contested region as both nations aimed to secure more land for settlement and resource exploitation.
Strategic significance: The Ohio Valley served as a crucial link between the French-controlled territories in Canada and the British-controlled colonies along the east coast. Both countries saw the region as strategically important for their plans for expansion and defense.
Native American Alliances: Both colonial powers sought to establish alliances with Native American tribes in the Ohio Valley to gain support in their conflicts. The French, in particular, were often successful in forming strong alliances, which influenced the dynamics of the rivalry in the region.