Chapter Vi. Economic and Social Movement

Growth of Population in Cities and States.—Centre of Population.—The Railroads.—Industrial Progress.—Development of Use of Electricity in Telegraph, Telephone, Lighting, and Manufacturing.—Niagara Falls Harnessed.—Thomas A. Edison.—Nikola Tesla.—The Use of the Bicycle.—Growth of Agriculture and Improvement of Implements.—Position of Women.—The Salvation Army Established in America.—Its Growth and Work.