Answer:
1. Social Darwinism: The belief that the theory of survival of the fittest also applies to people
2. Nationalism: Extreme patriotism & loyalty to a nation
3. Superior: Of higher rank, greater importance, or higher quality
"All northern states remained loyal to the Union" is False
:favorable balance of trade. Good luck.
The Great Wall of China is the longest building on earth with a length of 13,170 miles. Made from a combination of brick, stone, wood and other materials, it was originally constructed primarily to serve as a defence against the nomadic invasions from the north that threatened Chinese states / empires.