Which shows a major change from early settlements to complex societies? The trade or barter system disappeared under the growth of complex societies.
Animism became the main religious practice as villages became complex societies.
Specialized skilled workers became obsolete as complex societies grew and traded with neighbors.
Clan or family leadership evolved to village or town leadership, which made laws and maintained order.
The climate and reliable water supply resulted in food surpluses that were used for growth and trade with other villages.