The country that lost all of it's African colonies by 1920 was Germany<span />
The largest fear was the position on the slave issue. The pro and anti slavery advocates feared that the addition of California to the Union could cause a senate majority on the other side. The territory was left without a formal government after a debate within the senate and failed the amendments about the addition of California.
The significance of Howard Carter's discovery of Tutankhamen's Tomb was that, it was the first royal tomb in modern times to be found intact with new information for archaeologists. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer helps you.