During the gilded age how did the us congress act to regulate business practices

by the passing of the “sherman anti trust act”

Explanation:

the sherman antitrust act was created by the government to stop monopolies

i believe we're not a republic so that is a hard question

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.