Answer: D. An economic system characterized by voluntary allocation
Explanation: Socialism promotes or encourages the need for production, distribution and exchange to be run by community at large instead of only the government running the affairs of the community.
Socialism is a shared responsibility for the production and distribution of resouces between individuals in the community or a group. It is the economic and political theory that encourages individuals to do things collectively for the common goal of the society.
they were both Greek city-states that had many rulers in governers
If the statement above is trying to ask whether it is true or false, the answer would be false. It is because the behavior of the person does not define on the things that they buy or bought, and especially the way they think. All people are different and each individual exhibits their own way of thinking and their behavior which is why every person is unique in their own ways because all people are different and are not the same.