State and Local Governments' Subsidies for Railroad Construction During the Nineteenth

State and local governments' subsidies for railroad construction during the nineteenth century are best understood as an example of why the text says that

A) the corporate elite does not have a decisive advantage in politics.
B) the free market has always been a fiction.
C) there is no such thing as a mobilization of bias in U.S. politics.
D) throughout U.S. history, the government too has been involved in the economy.
E) Keynesianism in Europe was more conservative than Keynesianism in the United States.