This map shows the location of a landform that was created millions of years ago. It is a deep trench that is nearly 4,000 miles long. Which landform is shaded on the map?

Plz me in 1756 george washington was sent on a mission to, a. build a fort at the point where the allegheny and monogahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio valley.