Select all that apply. According to anthropologists, why did planting crops lead to the rise of a political class?

1. With economic stability came the need for warriors.
2. The crops planted could be used to trade with other cultures.
3. As food became more plentiful, people were freed up to serve as community leaders.
4. As settlements developed, leaders emerged to help organize and regulate these budding civilizations.
5. The more settled a community was the more they needed a form of monetary exchange.