How did american industrial leaders accumulate wealth during the late 1800s? a. by inventing new technology b. by developing new farming techniques c. by using mainly slave or forced labor d. by creating monopolies and establishing trusts?

They accumulate wealth by D.creating monopolies and establishing trusts
In the late 1800s, there is only little companies and business sectors that exist in united states.
Because of this, it is really easy for wealthy people with large influences to eliminate all competitions and dominate the market for a certain commodity.

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