Answer:
The answer is B. United States
Explanation:
hope this helps <3
The answer is C.
After the assassination Austro-Hungary sent an ultimatum to Serbia to investigate the assassination in Serbia, but Serbia declined the ultimatum, so Austro-Hungary declared war to Serbia. Then Russia declared war to Austro-Hungary and Germany declared war to Russia. Then the Ottoman Empire joined Germany and Austro-Hungary and they created an alliance and some other countries joined as well. After that, Great Britain, Russia and France created an alliance as well, and some other countries also joined their alliance. That's a short summary of how the WW1 started.
The main idea of Abraham Lincoln's Second Inaugural Address is that both the Union and the Confederacy were responsible for the Civil War. The second inaugural address was held at Washington D.C in 1865. From the excerpts, both the Union and Confederacy did not initially want to go to war but wanted to be victorious.
So the answer is B. Hope this helped!