the Interstate Commerce act was originally intended to regulate what industry-
(A) steel
(B) railroads
(C) mining
(D) oil
The Bessemer process improved the manufacture of-
(A) steel
(B) railroads
(C) mining
(D) oil
In, 1890, the U.S. Census Bureau announced the end of-
(A) homesteading
(B) Indian reservations
(C) the Frontier
(D) the Industrial revolution.