The mongols is history's biggest land contiguous empire that grew under the leadership of Khan,and was made of nomadic people. It sprung from eastern Europe and spread all the way to the far east.
The Mongolians were an exception because they perfected the mail system,protected the silk road, and left a legacy of unified political units such as Russia and China.
The quote "The United States in Congress assembled shall never engage in a war, not grant letters of marque or reprisal in a time of peace, nor enter into any treaties or alliances, unless nine states assent to the same" reflects the principle of federalism. The correct answer is A.
Okay so
14. I would say the answer to this one is: A new wave of nationalism.
15. The answer to this one is: Expansion of Slavery.
16. I think it is: The Taiping Rebellion.
I hope this helps you.
D) the united states suffering no war damage and having a strong economy
