At the bottom of Sparta's social group were the helots, who were enslaved agricultural workers. They were considered to be the lowest class and were bound to the land they worked on. If you want more information about Sparta's social group, you can check the link provided: http://www.sfusd.k12.ca.us/schwww/sch618/GreeksMultimediaProject/Graphic_Organizers_Greeks/Compare_Sparta_Athens.html.