Answer:
The answer is A.
Explanation:
The act guaranteed unemployment assistance and pensions for retired people over the age of 65.
That would be the principal of federalism
Answer:
The Great Wall of China was built as a military defensive line to defend the invasions from some northern nomadic nations. Apart from the function of defense, the wall also boosted the economy, as well as promoted the culture exchange and national integration of different nations at its two sides.
