Answer:
Boston Massacre
, is the right answer.
Explanation:
The Boston Massacre was a confrontation was started on 5th March 1770. In this encounter, the British troops killed and executed many people while being assaulted by a mob in Boston. The episode was massively advertised by notable Patriots such as Samuel Adams and Paul Revere. One of the major outcomes of the massacre was that more settlers became enraged about the action of Britishers.
In general, this movement had a negative impact since lots of the expansion involved moving into territories that were controlled by European nations. Although most of the time physical conflict was avoided.
In the era after Wold War I and before the Great Depression, American towns grew rapidly mostly because of the Second Industrial Revolution, which gave way to a rise of factories both in and around major cities in the US.
