C. Severely damaged the country's air, water, and soil.
A country selects its leader by determining the will of the majority voters
<span>Cleisthenes made all citizens over 30 eligible able to serve on the council and gave more power to the Citizen Assembly.
Hope this helps.</span>
<span>Humans settled down and begun to expand when they started to farm the land, instead of going from place to place after prey.</span>
C. It restricted peasants' social mobility.