Growing tensions mostly resulted due to high taxes, obligatory housing of British soldiers, unfair rule and treatment of the colony's citizens, and basically everything else that was unjust and resulted in the Boston Tea Party.
College was not a discovery but a development.
Answer:
Harriet Tubman's efforts
Explanation:
Abolitionists supported slavery and capital punishment, so they were most likely not happy to have slaves escaping.
The Frontier ended when all of the US was successfully settled one way or another
so True(?) if that is what it means,
hope this helps
