Answer:
The answer is D. Supreme Court
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Sugar plantations were the backbone ( source ) of the economy.
In 1890, the US Congress passed the ( McKinley Tariff ), which removed tariffs on all foreign sugar imports.
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The OPEC embargo highlighted the new control of the cartel in the world economy and hit many Americans, bring an extra case of their nation's decay in the 1970s. When the embargo took hold, oil prices sky-rocketed from $2 per barrel to $11. So, Its price affected Americans significantly.