Which innovation enabled ordinary people to buy cars?
A.
J.P.Morgan's methods of banking that made it easy to get credit
B.
Thomas Edison's use of electricity to keep factories open around the clock
C.
Henry Ford's assembly line, which made cars inexpensive
D.
Joseph Pultizer's use of advertizing in newspapers
A.
J.P.Morgan's methods of banking that made it easy to get credit
B.
Thomas Edison's use of electricity to keep factories open around the clock
C.
Henry Ford's assembly line, which made cars inexpensive
D.
Joseph Pultizer's use of advertizing in newspapers