According to the text what might be on reason an immigrant would move to the u. s

Which research question would likely fit the comparison and contrast organizational method? a) what is the emancipation proclamation? b) how many american documents address segregation? c) how do the constitution and the declaration of independence differ from the emancipation proclamation? d) what types of symbolism are used by dr. martin luther king, jr. in his i have a dream speech addressed to the american public?