Which explorer conducted a total of four voyages to the americas and established the columbian exchange and trans-atlantic slave trade?

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.

What does the fcc regulate? food and beverage products communications infrastructure environmental policies businesses breaking security laws

Which is another term for the enterprise system?