Between the two there are many intermediate stages, as Aristotle shows how the state develops from families. We might find clans, tribes, and federations of tribes in the process. Conventional societies include companies, banks, clubs, associations, and schools. While we cannot conceive of a viable society where there is no trade, we could conceive of one where trade was done without banks as we know them. Every developed society would have to provide specialized education, but the form of educational institutions can vary.
Man is a social or political animal.
As a solitary individual he cannot provide for himself. First, every man depends upon his parents for his coming into being, his nurturing and upbringing. Family members also provide mutual help in the necessities of life, as when one brother helps another. While the family members provide each other with the necessities of life, a greater society is needed if men are not merely to live, but to live well. This larger community is the political community, or state.