The creation of complex societies was brought upon by the advent of farming - a.
With farming being on the horizon, more and more people opted for staying in one place and start farming. This was easier for them compared to hunting dangerous wild animals. This eventually lead to the creation of complex societies.
Answer: I think it's the last two
Explanation:
Actually no one received the electric shocks, an actor pretended to receive them while the subject who was participating in the study followed the instructions and believed that he was giving the electric shocks. This study measured the level of obedience that a person can develop when faced with an authority figure that gives him orders.
I hope this information can help you.
1) The upper class is the Peninsulares (they were born in Spain).
2) Next were the Creoles, people born in Americas that have parents born in Spain.
3) Mestizos, people with Spanish and Native American parents.
4) Native Americans in poverty.
5) African slaves.
