Which best explains the rise of the first river valley civilizations? A
Climate changes suddenly made hunting more plentiful.
The introduction of farming led to a surplus of crops in flood plains with fertile soil.
B
С
Stone Age peoples learned how to make fires and tools of stone, wood and bone.
D
New ideas were introduced to Mesopotamia and Egypt through trade.

Which two statements best shows the effects of the congress of vienna on eroupe

What was the purpose of the federal reserve act

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.