Carnegie used what to build his fortune?

A. The lottery
B. Shrewd thinking and hard work
C. Friends, banks, and hard work
D. The 3 "I's": Immigrants, investment, initiative



Answer :

Final answer:

Andrew Carnegie built his fortune through shrewd thinking and hard work by investing in industries like the telegraph, railroads, and bridge companies.


Explanation:

Andrew Carnegie built his fortune using shrewd thinking and hard work. He invested in the telegraph industry, railroad, and bridge companies, which greatly multiplied his wealth.


Learn more about Andrew Carnegie's Wealth Building here:

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