What protected Ghana from being conquered by Muslim armies in the 700 A. strong walls
B. elite warriors
C. a peace treaty
D. the vast desert

explanation:

i think it is in quadrant 4.

the five year plans were part of a command economy. there was little choice in what would be emphasized for the current 5 year period.

the answer to democracy or totalitarianism is a bit harder. in stalin's time, russia was totalitarian. now that's not entirely true. putin has moved towards at least the boundary.

how do you want this answered?

because the earth is a round globe. but that is just what they tell us it is flat and those dudes actually where lying they sailed east.