In 1803 Louisiana territory was purchased from France
The sinking of the USS Maine lead to the Spanish-American War because the American battleship was docked in Cuba, then a Spanish territory. When it blew up alot of American citizens thought it was the Spanish because it was docked on a Spanish island. The Spanish however told the US that it was rebels that blew it up. To this day no one knows who or what blew up the US battleship USS Maine. <span />
They were too large and expensive - typically a computer would fill a room and would have to have its own power supply.
Robert Nisbet promoted the idea of the "intermediate society".