Which area did the Islamic Empire add by 750 A. D. (CE) that it did not have control of in 661 A. D

The person who has the job of maintaining order in the house is the sergeant at arms. majority whip. speaker of the house. president of the house.

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.

How may an amendment to the constitution be proposed?