How did human societies begin to change at the conclusion of the last Ice Age? A. War between the tribes occurred

B. Hunting techniques improved

C. Permanent settlements formed

D. The first cave paintings appeared

i believe it's A-war between the tribes occurred

Explanation:

i hope this helps you, sorry if it doesn't.

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;