Answer:the policy of protecting the interests of native-born or established inhabitants against those of immigrants.
Explanation:
<span>Invasions by Barbarian tribes <span>Economic troubles and overreliance on slave labor<span>Overexpansion and military overspending
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<span>It would be the Confederate cities of Atlanta and Savannah that were nearly burned to the ground late in the Civil War, since by this time the Union was implementing their harshest tactics in the hopes of forcing the South into submission. </span>