What was exchanged between Europe and the New World? add a few to tell that story. don’t search the answer

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?

How did the new working class of the industrial revolution differ from the working classes of the earlier, farm based economy?

Why was the sixteenth amendment important to woodrow wilson’s efforts to regulate the economy? a) the sixteenth amendment lowered interest rates charged by banks. b) the sixteenth amendment allowed congress to levy an income tax c) the sixteenth amendment lowered tariffs on imported goods d) the sixteenth amendment allowed congress to break up monopolies