HI, a frontier is an area of unexplored land close to or near a states borders.
The US leaders avoiding international alliances for more than 100 years was influenced by the "War Of 1812".
Answer:
Explanation:Slavery spawned a social order only consisting of degraded slaves, poor whites with no hope of advancement, and idle aristocrats.
"Free labor" northern society offered opportunity to move up in life by allowing the laborer to move up to the status of landowner or craftsman.
Republicans believed that "the Slave Power," the proslavery political leadership of the South, posed a greater danger to American liberty and aspirations than immigrants and Catholicism.
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<span>The Iran-Contra affair during the Reagan administration began with the U.S. selling arms to Iran in exchange for the remaining hostages and oil
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