Question

the lands upon the river ohio are... known to be the property of the crown of great britain.... it is a matter of equal concern and surprise to me to hear that... french forces are erecting fortresses and making settlements upon that river, within his majestys domains.... in obedience with my instructions, it becomes my duty to require your peaceable departure. erecting: building domains: territory peaceable: peaceful based on the letter, what was george washingtons mission? to start a war with france for the ohio river valley to order the french to leave the area to teach the french how to construct fortresses to help the french force native americans out of the area

Explanation:

The text in the letter emphasizes the need for the French to leave the area as the lands are the property of the Crown of Great Britain. It is about ordering the French to depart rather than teaching construction, helping other groups out, or starting a war at this moment.

Answer:

to order the French to leave the area