I don't have a regional answer but I am confidently sure that Saudi Arabia and China is among the countries that are the top dogs of producing oil. But Saudi Arabia beats China though.
Answer:
c. "Currency Exchange"
Explanation:
According to my research on Economics, I can say that based on the information provided within the question the term being described in the question is called "Currency Exchange". When exchanging currency for example, Argentinian Peso (ARS) with United States Dollar (USD), There are two values a sales price and a buying price.
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The two-factor theory of emotion has been used to explain:<span>passionate love.</span>
The executive branch of the U.S. government is responsible for enforcing laws; its power is vested in the President. The president usually lasts 4 years until further votes. The President acts as both the head of state and commander-in-chief of the armed forces. Independent federal agencies are tasked with enforcing the laws enacted by Congress.
The executive branch was to be designed forever because is its strict rules.
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The mandate system was a mechanism set up by the League of Nations after WW1, allowing the victorious powers to govern enemy colonies until the natives were fit to rule themselves. The colonies were called 'mandates', while the country ruling it was referred to as the 'mandatary'.