The social structures never really changed during the history of mankind, it just have a different format.
In every social structures, there will always be the Governors, and the citizen. The Leader and the followers. The Higher Class and the lower class. It will always exist through every society since it's just our basic human instinct to form it.
Human's Status and Roles will be differ according to where that people stand on social structure. Those who had higher status are expected to carry more important and decisive role for their society