The answer is D; it offered an alternative viewpoint to cultural conformity and consumerism.
The historians that came of age during the middle to late twentieth century tended to turn their attention toward : Social and cultural events and themes
This refer to the period between 1960 - 1999. many of them refer to the events that happen before this as 'history from below'
hope this helps
Northern: No slaves, mostly republican (our democrat) ideas, economy was based on trade and business
Southern: Slavery was supported, mostly (our idea of) republican, their economy was based on plantations and slaves
Hope this helps! Please let me know if I'm wrong or missed something. :)
