Automotive
As you can see from the above map, the total number of acres granted to the railroads was enormous. In total, the railroads received more than 175 million acres of public land
If the Homestead Act was Exhibit A of congressional and Government Activism, the Pacific Railway Acts were "Activist Government on Steroids".
http://www.blackdiamondnow.net/black-diamond-now/2014/10/the-pacific-railway-act-of-1862.html