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The Missouri compromise was nullified by the Kansas-Nebraska act. This act allowed the people in each state to determine whether or not slavery would continue within their state.
Abolitionist John Brown was executed because of his attempt to seize the arsenal at Harper's Ferry. John Brown led the Harper's Ferry raid.
The Treaty of Tordesillas awarded Portugal African territories and present-day Brazil, whereas Spain was awarded the rest of the Americas, which greatly improved Spain's power and trade capabilities. It accurately describes the impact of the Treaty of Tordesillas on trade.
