The phenomena of infant industries getting huge overnight arises. Most are in Transportation, Electrical, Chemical, and Oil. Mass Media arises. Print is used not only to inform but also to entertain. Newspapers print cartoons and sensational drawings.
Dime novels appear.
Money becomes international. Trusts and monopolies come about. Corporations become interstate and multinational. Within the big cities the ability to build structures higher, longer, and larger grows. Mass transit is begun.