I really need help on this history work! Ive been shuffling though my textbook for awhile and i cant find anything! Please help ♡︎ I’ll give brainliest to whoever helps first!

Why did the united states shift away from the policy of isolationism after world war 2?

How did nationalism motivate italy's unification? the italian people wanted to return to a pre-napoleon ancien régime. the italian people wanted a republic nation free from austrian rule. the italian people wanted to instigate industrialization in italy. the italian people wanted to lead europe into the modern age.

Plz i will give use examples from the lessons and your own personal experiences to compose at least one well-developed paragraph on the following: define the term reserved powers, and give an example of a reserved power of government.