What was the purpose for it and what did the jewls do to combat their living conditions in the ghetto.
I assume you mean the Jews, and reffering to jewish ghettos in german occupied europe, most notably Poland. There is a wealth of information available on the net. I think part of a homework assignment should be for you to actually do some research on your own, instead of asking others to do it for you.
You could start here: http://en.wikipedia.org/wiki/GhettosinNazi-occupied_Europe