In 2004, a report published in USA pointed to the increasing inequality in that country. Inequality in income reflected in the participation of people in democracy. It also shaped there abilities to influence the decision taken by the government. The report highlighted that:

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.