Question

Before the Agricultural Revolution, many people lived in rural areas because

Answer 1

they could grow food on small areas of land.

Answer 2

before the Agricultural revolution, there really weren't any cities.

Cities required that enough food was produced that not everyone had to devote their time to the production of food. This only came to be with the agricultural revolution, and before people could not afford not producing food: this also meant no specialised soldiers or rulers or builders, and no cities.