What are four key points influenced social, political, or economic factors in fashion during the era of Ancient Rome?

Two large influences on Ancient Roman clothing for men and women were from the Etruscans and the Greeks. Socially, as variations to togas and stolas became possible, strict rules that identified clothing options and people by wealth and social status cam into being, later to be relaxed. Economically, clothing options divided the populace on economic lines as thoroughly as on social lines. Some ceremonious occasions required that men wear the Roman togas and stolas, yet these were very costly and difficult to obtain for poor Romans.