The answer is Louis the XVI (16th)
Y= -3x + 2
Use the slope formula
m=y2-y1/x2-x1
Now you need to find the y-interceot.
But no work is required as one of the given pointa is the y intercept
I think a good answer would be "resources" - in a total war, a nation wants to put all the effort they can into the war, so they will use all their resources for it.
Vietnam was temporally divided into two separate nations
Louisiana was the region that Britain claimed at wars end from these particular victories