What does thomas jefferson mean when he says "the tree of liberty must be refreshed from time to time with the blood of patriots and tyrants"?

it means that we must always be on guard against the ever expanding reach of the government and that if we expect to remain free we must be ready to fight to keep our freedom.

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

i dont know but i need points