Answer:
Southerners otherwise known as the Northern Song Dynasty.
Explanation:
They committed late to the Mongolian empire so they are lowest in class.
Answer:
First, the American Revolution secured the independence of the United States from the dominion of Great Britain and separated it from the British Empire. … Today most of the world's nations are at least nominal republics due in no small way to the success of the American republic.
Explanation: I hope this helped or made you think a little harder
I think the answer is a b and c