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.
Hope this helps.
The slave trade between Western Africa and the America's reached its peak in
the mid-18th century when it is estimated that over 80,000 Africans annually
crossed the Atlantic to spend the rest of their lives in chains.
It significant because it was the first major patriot victory to occur after the British invasion of Charleston, in May 1780
Henry Hudson - Hudson River
Jacques Cartier - St. Lawrence River
John Cabot - Nova Scotia
Sir Francis Drake - Vancouver
radiation I believe that is it
