Answer:
<h2>B. Genocide</h2>
Explanation:
There was a large genocide in Cambodia that killed over 2 million people. The survivors fled to other countries, including the U.S.
<h2>I'm always happy to help :)</h2>
Answer:
I think of the Declaration of Independance
McClellan discovered General Robert E. Lee's battle plan.
Obviously, infiltration and access to battle plans allow for the opponent to figure out what their opponent's plans are, thus giving McClellan the victory at Antietam.
Hope this helps!