The most accurate words to fill the spaces would be:
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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Answer:
They became precedents.
They are drawn up within the Constitution.
They cope with foreign affairs.
Answer:
the 2nd one
Explanation:
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On December 8, 1941, the United States Congress declared war ( Pub. L. 77–328, 55 Stat. 795) on the Empire of Japan in response to that country's surprise attack on Pearl Harbor and declaration of war the prior day.
