I believed the answer is 4. It makes sense because, after the agricultural revolution, people switched from hunting and gathering to crops and needed necessary tools to do that. Number 1 doesn't really make sense because in the Classical Era, they created religions early, so it's not it. B doesn't really make sense and 3 is wrong because they still used animals.
1) at the onset of the agricultural revolution, early humans developed new social cultures and established rules.
Explanation:
This is the answer that best describes how changing from a hunter-gatherer society to an agricultural society affected early human development. When agriculture was adopted by early humans, people were able to become sedentary. This meant that villages and towns were established, and the population increased. Rules were established in order to regulate behaviour among these large groups of people. Moreover, isolation and the division of labour led to the development of new cultures which were distinct of other social groups in different geographical locations.
Life expectancy decreased as large numbers of young people died from diseases. American urban areas came to hold more of the population than rural areas. Asian immigrants became the largest group of new arrivals into the country.
