The second industrial revolution was said to be between 1870 and 1914, after the civil war. The main reasons of the second industrial revolution were due to: natural resources, abundant labor supply, strong government policy, new sources of power, railroads and American inventors and inventions. The Second Industrial Revolution brought new inventions and innovations in technology including the Steel Mills, Refrigerator, Electric Light, Typewriter, Telephone, Skyscrapers, Elevator, Phonograph, Motion Pictures, Washing Machine, Automobile, Diesel Engine and the Airplane.