Fracking involves in order to force out natural gas under high pressure.
a. excavating earth’s surface
b. pumping materials into a well deep underground
c. detonating explosives underground
d. pumping toxic chemicals through shafts in the ground

In a command economy, people are not free toa buy consumer goods.b work in factories.c make production or monetary choices.d receive an education.

What event caused france and napoleon to want to get rid of its louisiana territory in north america? a) civil war b) seven years war c) slave revolt in haiti d) the french and indian war

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.