A and C are exactly correct.
In the Civil War era, this struggle focused heavily on the institution of slavery and whether the federal government had the right to regulate or even abolish slavery within an individual state.
Answer:
It allowed China to connect with other civilizations.
Explanation:
<span>The battle of Yorktown was the last major battle of the revolutionary war because the British Army, led by General Lord Charles Cornwallis, was forced to surrender because the Continental Army, led by General George Washington, surrounded the British Army.
Hope this helped! :)</span>
