The best and most correct answer among the choices provided by the question is the second choice "He let his party campaign for him."
In 1860<span>, </span>Lincoln<span> won the party's </span>presidential<span> nomination. In the November </span>1860 election<span>, </span>Lincoln<span> again faced Douglas, who represented the Northern faction of a heavily divided Democratic Party, as well as Breckinridge and Bell.</span>
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Answer: The valleys of the Tigris and Euphrates rivers were the site of the world's first civilizations. The rivers of Southwest Asia supported the growth of civilizations. New farming techniques led to the growth of cities.
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Explanation: