The answer should be casualty.........
This is because it was when the Allies were able to defeat the Axis powers, which gave hope to the Allies to fight stronger. Also, when they defeated Axis powers at that battle, they(ALLIES), now had vantage points on both sides of Germany; east(UK) and west (Russia).
It exchaged the. splended cultures of China
Answer:
it unites Americans by allowing us to be able to keep in close contact with our friends/family/loved ones etc. but it also divides us, because sometimes people can post someone else's private info, which can lead to a broken friendship.