Based on the map, which early civilizations developed beside two large rivers?
a. egypt and shang china
b. indus civilization and sumer
c. sumer and shang china
d. egypt and indus civilization

Correct answer is C, Sumer and Shang civilzations of China. Sumer is considered as the cradle of civilization. Samuel Noah Kramer was its first ruler. Shang civilzation was te succesor of Xia dynasty, and ruled in the yellow river valley.

A,) cause a & b are equal & both gives 180°

The answer i think is d