After Congress has approved a proposed amendment to the Constitution, what then must take place before that amendment becomes law?
The president must approve it.
Three-quarters of the states must approve it.
The Supreme Court must approve it.
Halt of the states must approve it.

wheres the studying charts

explanation:

monopolies  came to the united states with the colonial administration. the large-scale public works needed to make the new world hospitable to old world immigrants required large companies to carry them out. these companies were granted exclusive contracts for these works by the colonial administrators. even after the american revolution, many of these colonial holdovers still functioned due to the contracts and land

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