Answer:
Conflict between them and the French
Explanation:
The rivers were the main way of traveling by the British and their officials but the French wanted to control the American Indian trade in the Ohio River Valley reason, to keep the Pennsylvania traders out for their own selfish reason.
This confict as a result whom to gain control of the Ohio River gave the British officials a lot of problem because it emanating a war which the britian didn't need at the moment.
