Why did the american army settle at valley forge

Since the British were in Philadelphia, the American Army wanted to keep an eye on them and prevent them from moving to the countryside for food which they needed to live. Also the terrain in Valley Forge was easy to defend.

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.