In the early 1800s, coal and steam drove the machines of industry. By the late 1800s, new kinds of energy were coming into use. One was gasoline, which powered a new type of engine called an internal combustion engine. Small, light, and efficient, this engine would eventually make electricity. In the 1870s, the electric generator was developed, which produced a current that could power machines. This invention made it possible to bring the magic of …showed first 75 words of 366 total…

…showed last 75 words of 366 total…power a vehicle called the Automobile. Automobile technology developed quickly, but since early cars were built by hand, they were expensive to buy and repair. Two bicycle mechanics from Daytona, Ohio, named Wilbur and Orville Wright solved the age-old riddle of flight. On December 17, 1903, they flew a gasoline-powered flying machine at Kitty Hawk, North Carolina. The longest flight that day lasted only 59 seconds, but it was enough to began a whole new industry called Aircraft.