OHIO is the important river valley because it is commercial route to import and export the good to other countries, it is also favourable for residents of Ohio.
Step-by-step explanation:
The farmers and manufactures sent their goods such as crops, other products on flatboats.
The french and Indian war take place between the year of 1754-1763 , it became the more conflict between the England and France over the control of the Ohio river valley. Both countries wanted the river valley because they have to expand their settlement in the area.
The place was attracted by the British so they want to occupy the Ohio valley and to trade with native Americans. So the Britannia declared war on the France .