Question

based on the map, why would american military planners want to invade cambodia?
to reinforce protection of saigon by creating a buffer zone
to escalate the war by involving neighboring countries
to stop the viet cong from using a supply route
to have exclusive access to the mekong river

Explanation:

The Ho Chi Minh Trail was a crucial supply route for the Viet Cong. By invading Cambodia, American military planners aimed to disrupt this supply line. This would weaken the Viet Cong's ability to fight in South Vietnam.

Answer:

C. To stop the Viet Cong from using a supply route