Oil demand has been waning in Japan. Oil in Japan is mostly supplied by the Middle East such as Saudi Arabia or Iran, as well as Russia.
Saudi Arabia, officially known as the Kingdom of Saudi Arabia, is the world's number one oil exporter and the country with the largest amount of oil reserves.
After the American civil war in 1865, literacy test and poll taxes had an important impact on the poor and African Americans, who were not allowed to vote in spite of the 15th amendment, which was only address until 1960’s by the federal government. Moreover, poll taxes, a payment required before voting, kept African Americans from exercising their legal rights.
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Explanation:
"If the ruling dynasty was wealthy, it would keep the Mandate of Heaven" is the best answer from the list, but it should be noted this was not always the case.
