The correct answer is <span>The division of urban society between workers and a managerial middle class
Although they claimed that all classes were abolished and all kinds of things like that, they actually weren't and there was a clear distinction in earnings and the lifestyle of those who were managers who formed some sort of a middle class and those who were regular workers who formed the working class or the lower class.</span>
Existed during the last glacial maximum, approximately 14,000 years ago, when sea level was much lower and present-day Alaska and eastern Siberia were connected.
