Who is responsible for poverty ?!

In each city or country there are beggars , for example chicago... What is the source of this phenomenon ? What makes some people rich and others poor ? There are many possibilities : drugs , alcohol , education government , etc. But the funamental of begging is three broad categories are :individual  society and govenment , for example of the individual , the person dosen't want to work and be passive , example of the society , some families inforce their children to stop going to school even tofind work to pay bills , and example of government , the government does not provide jobs fo the unemployed , so the unemployed phenomenon spread in the countries . That meanss there are many factors and we cannot twit any factor alone , we must bear this in mind .