World War II never happened, due to relatively stable relations between Kapp's government and the Western powers. Instead, Germany pursued territorial acquisitions in Eastern Europe, with the mutual support of Britain and France.
The old colonial empires have largely survived the course of the 20th Century, although they have since moved towards an autonomous model (e.g. British India is governed by assorted 'native councils').
Having emerged defeated from wars with Germany, the USSR has dwindled to fairly insignificant status.