So the people can get water and there is fertile soil
Wave of invader swept across Western Europe (Vikings, Franks, Goths, and Huns) trade slowed down to a trickle (people became more isolated) towns became empty, and classic learning just stopped.
The city is located in the East North Central Region on the southwestern tip of Lake Michigan. The Chicago and Calumet rivers are the city's main rivers. Downtown Chicago seen from the John Hancock Center observatory, looking south.
The Cold War in space
When the Soviets launched the world's first artificial satellite, Sputnik I, in October 1957, it set off alarm bells in the Eisenhower administration and created intense fear and anxiety among the US public that the Soviet Union had surpassed the technological achievements of the United States.
