Final answer:
During the late 1800s, pools, trusts, and holding companies were used as business practices in the United States to reduce competition.
Step-by-step explanation:
During the late 1800s, pools, trusts, and holding companies were used as business practices in the United States to reduce competition. These practices involved combining resources and consolidating control over various industries, allowing for a monopoly or near-monopoly situation. By eliminating competition, businesses could exert more control over pricing, production, and market dominance.
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