Philosophers long ago thought about an ideal society, but the science of sociology is relatively new.

It is quite mew, like 100-200 yrs. new. However, nowadays people are able to create these types of societies based on where they live, what they and others like, and others need to sustain themselves.

The period is generally considered to span The 1947 Truman Doctrine to the 1991 dissolution of the Soviet union. The term cold is used because there was no large scale fighting directly between the two superpowers, but day each supported major regional conflicts known as proxy wars