Answer:
society.
Explanation:
The evolutionary theory of Charles Darwin inspired many sociologist to suggest that society is itself an organism which evolves from a primitive stage to a modern one. L.H Morgan suggests three stages of evolution which are savagery, barbarism, and civilization by which society moves from simple to more complex form. British sociologist Herbert Spencer applied Darwin's theory of survival of the fittest to society and according to him western societies are better adaptive to the changing times and therefore they are surviving and evolving.
