To try and prevent another world war from breaking out and obviously that didn't work.
Answer:
Marcus Garvey was an orator for the Black Nationalism and Pan-Africanism movements, to which end he founded the Universal Negro Improvement Association and African Communities League. Garvey advanced a Pan-African philosophy which inspired a global mass movement, known as Garveyism.
Explanation:
I believe the answer is A) The cold war.
I hope this helps :)
B because we lost so many soldiers we didnt want to get involved in something we didnt have to
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.