John Brown was a radical abolitionist who believed in the violent overthrow of the slavery system. During the Bleeding Kansas conflicts, Brown and his sons led attacks on pro-slavery residents. Justifying his actions as the will of God, Brown soon became a hero in the eyes of Northern extremists and was quick to capitalize on his growing reputation. By early 1858, he had succeeded in enlisting a small “army” of insurrectionists whose mission was to foment rebellion among the slaves. In 1859, Brown and 21 of his followers attacked and occupied the federal arsenal in Harpers Ferry. Their goal was to capture supplies and use them to arm a slave rebellion. Brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon.
Answer: Gunboat Diplomacy.
Explanation: This is when a nation uses the threat of force or conspicuous displays of firepower to have influence in foreign policy, and it's called "Gunboat Diplomacy". The president Roosevelt used this tactic as a way to secure Panama's independence from Colombia; in a way of exchange the United States was able to secure access to what would become the Panama Canal.
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In the 5th Crusade the Holy Land was trying to be required
The Louisiana Purchase helped to double the size of the country and provided control of the Mississippi River. The Louisiana Purchase was a massive land purchase by the U.S. from France under President Thomas Jefferson's administration.