The Louisiana Purchase doubled the size of the United States.
Denmark. Once upon a time there was a prince who wanted to find a princess, but ... In the morning she was asked how she had slept. ... prince took her for his wife, because now he knew that he had a real prince
Run-off from pavement or smooth rock during rainfall is much greater and faster than run-off from soil or other surfaces as there is little obstruction (friction) to the water flow. These surfaces also absorb very little water, meaning that there is a larger amount of run-off.
This means that waterways can have to deal with large intakes of water in a very short amount of time, often leading to flash flooding, as the waterway can not handle such a large amount of water at once.