Answer :
The depression led people, in countries such as Germany and Italy to start voting for more extreme parties as the current and frankly useless parties were not improving the living conditions of ordinary people. Nazism in Germany was a result of large promises, quick results and no-one or thing standing in their way. The people of the time (in Germany) loved the fact that politics was no longer a democracy and that fast changes were actually happening.
D. It strenghtened them because people felt a stronger governement could improve the government.