4. What were the main results of the rise in nativism during the 1920s?

There was fear and prejudice towards the Germans and Communist and that expanded to include all immigrants.  They signed the Emergency Quota Act, which limited immigration: only allowing a certain percentage of ethnic groups into the united states.

d) iowa i believe is the answer

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.