When civilizations began to form
a) people began to hunt.
b) people stopped hunting.
c) the world began to expand.
eliminate
d) world population increased.

- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

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four sitting presidents have been assassinated while in office but the first was abraham lincoln,