Answer:
I think the answer is B. Land claims and use of slaves
Explanation:
The main reason why the United States largely shied away from imperialism prior to 1890 was because it was still a relatively "fragile" nation with a host of its own issues to work out--such as the slavery issue that eventually led to the devastating Civil War.
<span>He used heavily armed planes. </span>
It was caused by Internal conflict of the military governors
Antietam, also called the Battle of Sharpsburg
