-Dev. of chemical, electrical, oil, & steel industries
-mass prod. of food & clothes, popularized cinema & radio
-Inc. of employment & production
-Bessemer Process: cheap & fast way to make better steal, dev.: 1850
-Thomas Edison: Invented electric light bulb, acoustic recording on wax cylinders, & motion pictures
-Samuel Morse: patented telegraph, creator of Morse Code
-Alexander Graham Bell: invented telephone (1876)
-Gugliemo Marconi: sent radio waves across the Atlantic, 1901