What were some the hardships that did not allow greece to have a large population?

One of the main problems that Ancient Greece faced was that, contrary to popular perception, the land quality in Greece was not optimal. Terrain tended to be rocky and grasslands were not common.

Animal husbandry, therefore, was restricted to a small percentage of the population and was not well developed in Greece. Moreover, crops that were grown were resilient, but labor intensive (such as olives) or low in nutrients (for example, barley, as opposed to wheat). During the hot summers, irrigation was necessary, and due to the small number of farm animals, Greeks did not use animal manure or animal power, both of which greatly reduced their agricultural productivity.

All these factor meant that Greece could not achieve the large population that can be seen in large Ancient empires.

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

you can't, there's no way sorry