Why was New York impossible to defend during revolutionary war

Controlling the Hudson River was vital to the war effort on both sides. The British held New York City and its port for most of the war. The Continental Army was able to hold and control most of the Hudson River allowing them access to the entire Hudson Valley.

Explanation:

(source :google)

cultural achievements of the 1920's 2010  

1. cultural achievements and african american achievements in the 1920’s  

2. art and literature charles lindberg flew from ny to paris, france. became national hero; first transatlantic flight.  

3. greenwich village (new york) and the south side (chicago)  many artists, writers, and intellectuals flocked to these areas to share ideas  people lead bohemian, or artistic and unconventional, lifestyles