The reason is that the Native Americans were not as advanced as the Mesopotamia people.
industrialization of American cities.
Central American Technological University was created in 1987.
Computers and Internet are some of the technological advancement in the American society.
American inventions are steam engine,first analoge watch,
communication
Major American inventions include the Voyager 1 spacecraft, the Saturn V rocket and the Advanced Research Projects Agency Network (ARPANET)
Benjamin Franklin is the American leader recognized for his scientific discoveries and inventions during the Enlightenment period.
Cat.
Transportation
the air brake is one
Burglar alarm-1852
The Knickerbocker rules for base ball!