2Natural Resources fuel industrialization At the end of the 19th century, natural resources, and growing markets fuel an industrial boom.By 1920s, U.S. is world’s leading industrial power, due to:- wealth of natural resources- government support for business- growing urban population
3Bessemer processthe Bessemer process -- the most important technique for making steel in the nineteenth centuryDeveloped by Henry Bessemer and William Kelly around 1850Injecting air into molten iron to take out the carbon and other things to make steel
4New uses for steel Railroads Barbed wire farm machines Innovative construction (like the Brooklyn bridge(
5Alva Edison (February 11, 1847 – October 18, 1931) Establish the worlds 1st research laboratory in Menlo Park, New JerseyPerfected and patented the incandescent light bulb in 1880Invented a whole system for producing and distributing electrical powerThis enabled industry to grow like never before
6Christopher Sholes Christopher Sholes Intended the typewriter (1867) The Typewriter opened new jobs for women
7Alexander Graham Bell Christopher Sholes Alexander Graham Bell Intended the typewriter (1867)Alexander Graham BellThe telephone (1876) with Thomas WatsonThe telephone opened even more jobs for women
8Dynamite!In 1863, Alfred Nobel invented the Nobel patent detonator or blasting cap for detonating nitroglycerin.Nitroglycerin was first invented by Italian chemist Ascanio Sobrero in In its natural liquid state, nitroglycerin is very volatile. Alfred Nobel understood this and in 1866 he discovered that mixing nitroglycerine with silica would turn the liquid into a malleable paste, called dynamite.