The Dust Bowl was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent the aeolian processes (wind erosion) caused the phenomenon.
The European balance of power broke down was an effect following German unification is correct answer due to fact that Germany (except Austria) was united by militarist state of Prussia with powerful army which definitely change balance on the European scene especially that formal unification took place just after end of Franco-Prussian war which humiliated France.
During the 1920s the red scare the trial of Sacco and Vanzetti and the rise of nativism were all sign of "paranoia" and "anti-radicalism," since these had to do with finding and persecuting communists.
The idea that helped create an independent America from the Great Awakening is the natural rights which come from God. It contributed to the independent spirit among the colonists of America because it was able to reduce the hierarchical power of the religious sects. It made people think more about themselves than the issues in the religion.
