Question

what type of economic and social division we can find in roman empire?

Answer 1

there were multiple and overlapping social hierarchies, and an individual's relative position in one might be higher or lower than in another.[1] The status of freeborn Romans during the Republic was established by:

ancestry (patrician or plebeian);

census rank (ordo) based on wealth and political privilege, with the senatorial and equestrian ranks elevated above the ordinary citizen;

attainment of honors (the novus homo or self-made man established his family as nobilis (“noble”) and thus there were noble plebeians); and

citizenship, of which there were grades with varying rights and privileges.