Civilization of, like, the Mayans, or something.
I think it is C but I am not sure
As a result of the support of the war effort in OPEC instituted an oil embargo
OPEC instituted an oil embargo
Explanation:
The oil embargo happened because the nations that constituted OPEC warned the nation that supporting Israel in the war would lead to that.
The US had openly supported the Israel war effort and thus all the oil rich nations of the OPEC including Saudi Arabia, UAE and Oman had signed the embargo.
BY the virtue of this, the export of oil to US was stopped.
