What did the Interstate Commerce Act ban in 1887?

A. railroad pools

B. interstate railroads

C. steel monopolies

D. sugar-refining monopolies

Correct answer choice is:

A. railroad pools

Explanation:

The Interstate Commerce Act of 1887 may be an American federal law that was designed to manage the railroad business, significantly its noncompetitive practices. The Act needed that railroad rates be "rational and just," however it didn't permit the govt to mend specific rates.

It was railroad pools that the Interstate Commerce Act ban in 1887, since in many ways these pools led to unfair competition between different railroad companies.