Answer:
The answer is: <u><em>manifest destiny</em></u>
Explanation:
John L. O’Sullivan, Who worked as an editor of a magazine was the first one to use “manifest destiny” in 1845.
This concept stated that America has a right to expand across the whole continent so that they can become more powerful and independent.
Answer:
B. He greatly improved existing steam engines for use in factories.
Explanation:
James Watt made important changes to the design of the steam engine, which increased efficiency and made steam engines cheaper to run.
It causes slave rebellion and anti-colonial uprising. They founded the first black republic in modern history that they called Haiti.