<span>"The Battle of Antietam was one of the most important events of the American Civil War.
... The battle ended the Confederate invasion of Maryland in 1862 and
resulted in a Union victory. It also led to President Abraham Lincoln
issuing the Preliminary Emancipation Proclamation on September 22, 1862."
These are not my words, there from study.com / hope this will help you
</span>
D)
Because:
Description
The Missouri Compromise was the legislation that provided for the admission of Maine to the United States as a free state along with Missouri as a slave state, thus maintaining the balance of power between North and South in the United States Senate.
Answer:
World War I
Explanation:
New submarines built in east coast shipyards were sent to Key West where they received their crews and orders to sail through the Panama Canal.