The nixon administration attempting to stop publication of the pentagon papers demonstrates the principle of prior

It demonstrates the principle of “prior restraint”.

Prior restraint, which is also known by other names like prior censorship and pre-publication censorship, is a restriction levied against a particular publication or expression. Usually the government is behind such a censorship and he reason can be national security or similar issues.

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