How did aqueducts allow the empire to expand? Choose four correct answers. by allowing military troops to move more easily
by decreasing the spread of disease
by allowing more people to live in the city
by forcing people to move out of dry areas
by increasing hygiene and sanitation levels
by enabling Romans to farm in dry areas

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.