The Panama Canal is so important to the US for trade. It greatly decreased the amount of time it took to travel between the Pacific Ocean and the Atlantic Ocean, thus causing an increase in commerce.
I think the answer is noises and gestures for danger
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federalists leader John Adams. and Republicans Thomas Jefferson
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Slavery divided Americans from the beginning, but Americans demonstrated a shrewd ability to maintain unity in spite of division. In the 1770s, all of England’s North American colonies employed slave labor. Enslaved workers grew food, cultivated cash crops, worked in ports, and manufactured goods.. By November 1860, an opponent of slavery’s expansion arose from within the Republican Party. During the secession crisis that followed in 1860-1861, fears, nearly a century in the making, at last devolved into bloody war. (