One circumstances that prevented England from expanding its territories quickly as other European nations was that they were basically located in an Island.
Answer:
Popular sovereignty was seen on the issue of slavery as a political middle ground. Popular sovereignty is the principle that people should rule, and as such the status of slavery should be determined by the votes of local settlers and not congress.
During the Mexican War, when slavery became a political problem, Douglas faced a challenge. Fearing that the issue would interfere with the Constitution, he argued for the doctrine of popular sovereignty — the right of the people of a state or territory to determine for themselves the question of slavery — as a solution for the sake of the Union. He led the congressional struggle for the 18th compromise.
The Boston Tea Party was a political protest that occurred on December 16, 1773, at Griffin’s Wharf in Boston, Massachusetts. American colonists, frustrated and angry at Britain for imposing “taxation without representation,” dumped 342 chests of tea, imported by the British East India Company into the harbor. The event was the first major act of defiance to British rule over the colonists. It showed Great Britain that Americans wouldn’t take taxation and tyranny sitting down, and rallied American patriots across the 13 colonies to fight for independence.
C. Bantu
Bantu-speaking peoples migrated from Western Africa (in the area of modern Nigeria) throughout southern parts of Africa starting around 1000 BC and continuing to the 1500s (or perhaps a bit later, by some accounts).
There is some debate among historians as to whether iron metallurgy arose independently in Africa or was learned or borrowed from the Middle East or Europe. But whether independently invented or borrowed, the fact remains the the spread of iron working in Africa and the spread of Bantu languages by Bantu migration across Africa were correlated events.