Who is credited for using his wealth to build up the steel industry?
a. thomas edison
b. john rockefeller
c. cornelius vanderbilt
d. andrew carnegie
answer

D. Andrew Carnegie

Explanation:

Andrew Carnegie allowed the expansion of the steel industry in the United States in the 19th century. He made his fortune controlling iron and steel operations by adopting cheap and efficient mass production. He  was a philanthropist and considered himself a distributor of wealth, but not its owner, so he did many donations to universities, charities and foundations.

b) the importance and limits of political power.

the answer should be:

their party has more members.

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