The key scholars for and the primary focus and underpinnings of each social era management theory. For example, what was or is their implication and insight in relation to management effectiveness? The importance of this theory during its inception in management history. What made it groundbreaking at the time? Why? The perceived past, present and/or future value of the theory to management thinking and operations. What did it lay groundwork for that is meaningful then and now? Provide at least 3 additional scholarly reference sources, different from the ones provided in the readings from the social management era relevant to the topic or problem you identified. Follow APA style