Suggestions on why societies, nations, communities change

Which of the following statements is true about the treaty of versailles ?

Was president roosevelt justified in ordering executive order 9066, which resulted in the internment of japanese american citizens? write a clear claim that responds to this writing prompt.

What two different approaches did the knights of labor and the american federation of labor take in building a union organization? a) the knights of labor accepted only unskilled workers; the american federation of labor accepted only skilled workers. b) the knights of labor accepted skilled and unskilled workers; the american federation of labor accepted only skilled workers.c) the knights of labor refused to accept african american or chinese workers; the american federation of labor accepted all workers.d) the knights of labor accepted workers from a single industry; the american federation of labor accepted workers from several industries.