C. defended their occupation of Detroit.
Hope this helps!
Wait, who lived in that time? The answer could be 'war' but I need more information...
<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>
<span>-satisfy the demands of competing nationalities.</span>