Why were french explorers interested in claiming the mississippi river and having access to the great lakes?

In which case did the supreme court's decision allow schools to use forced bussing to ensure integration of its schools?

When did the us congress declare war on the confederate states?

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela 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 river.