As agriculture replaced hunting and gathering, began to develop.
a. empires
b. countries
c. civilization
d. monarchies

Anode is a point on a wave where there is no vibration. a. true b. false

Which environmental change allowed people to travel by land between asia and north america a. human apaption to arctic environments b. the introduction to horses to north america c. the formation of ice sheets on land d. a rise in ocean temperatures

Which of the following is not a result of increased democracy in russia?