Gutenburg's printing press was such an important invention, because before he invented it, people would either write stuff all by hand, or make some stamping system. If Gutenburg hadn't invented the printing press, we wouldn't have printers to print things out!
Extra: Gutenburg designed the printing press in a town called Strasbourg, France. he built the actual thing in Mainz, Germany.
The south didn't grow crops very much, instead they grew cotton which made them rely on the North for crops and other materials. So the correct answer would be "B" since that seems like the most plausible answer.
