Answer:
Social Change Theory
Explanation:
It's a theory that needs a range of themes to be explained, not only History or Social Studies, but other fields such as Psychology, Biology, Philosophy and so on. This happens because of the necessity to understand society as a big organism, and every aspect of this process as an interconnected limb. If one limb fails, the organism suffers damage. However, beyond this point, the Social Change Theory sees the advance as a process of many fields, many social identities, and because of that, it needs a deep explanation.
