Got rich selling oil
a: thomas edison
invented the telephone
b: advertising
used the assembly line to make cars.
philanthropist
made a usable light bulb.
d: john d. rockefeller
was a steel factory owner
e: cornelius vanderbilt
is a rich person who gives back to society
f: monopoly
was successful in the railroad and shipping
industries
g: henry ford
h: andrew carnegie
was a wealthy banker.
9. a
alexander graham bell
is a business with no competition
j. p. morgan
informed people about products and services