Zhou dynasty ruled because it had what?

answer:

"the early leaders of the zhou dynasty introduced the idea of the "mandate of heaven". this concept taught that the leaders gained their authority to rule from the gods. they believed that when the zhou overthrew the shang dynasty, this was because the shang had become tyrants and the gods allowed them to fall."

explanation:

is this ?

source: ducksters.com

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."

b) new machinery hope i