What industries did john d. rockefeller and andrew carnegie respectively generate their wealth in?

In a market economy, what does a producer mean when it asks, "is there a market for my products? is there a place where we can sell our products? " "ls our product being made more cheaply overseas? " will consumers need and want to buy our products? " will the government support demand for our products? "

Preachers who were part of the great awakening urged people to

What do you call places that belong to united states but arent states