War Stories - S1-E9
Revealing mistake: During the firefight on Niska's ship, when Simon sees a guard coming and says to Sheppherd Book, "Book, we, uh-", a dead guard on the floor moves his legs as the guard that Simon saw fires his weapon. (00:37:10)
Chosen answer: One of the premises of the show is that the two major Earth societies that survived, and ultimately merged, were the Chinese and Americans. As a result the common language includes much Chinese. Clothing, signage, and building designs also have a heavy Chinese influence.