When was the country usa was etablished

What are the two powers that the federal and state governments share?

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

The "nationalists" and fascists battled against the "republicans" and communists in a civil war in the 1930s in