Agriculture created surplus which meant that someone could feed a larger family. If you are a hunter gatherer you need to be a very good one to support more th

Agriculture created surplus which meant that someone could feed a larger family. If you are a hunter gatherer you need to be a very good one to support more than one wife, even if you are the chief. With surplus generated by agriculture, spare time can be spent innovating to increase the surplus. Inequal skills in building a personal surplus - whether by conquest, investment or thrift - means that some people get richer. Richer men gain power and are able to not only attract more females but rewrite the rules to make it so. A few generations of this and you change the population considerably.