The idea that inequality inevitably produces political conflict is most consistent with:

It is most consistent with the class approach.
It seeks to study social and political in terms of relations between two economic classes the Rich and the Poor or in other words the haves and have-nots. This is also regarding the class fighting between these two classes facing the reality of all relations in all human organizations. Determining economic relations is also present every day based on their political view.

Bthreatening to ally with germany