The name for a geographically wide ranging group of peoples and states ruled by a single government is empire. The correct option among all the options that are given in the question is the second option or option "B". An empire can cover a huge amount of area consisting of several states or countries.
Many people believe the United States should of helped Germany after World War One. After WW1 the Treaty of Versailles created a great depression in Germany, because of the aggressive reparations. Many historians believe that the end of WW1 caused World War 2.
Both country build up new technology to compete against each other in the race to space thus creating longer range missle.