The three conflicts in America mentioned in the question have a commonality. Let's break down the options:
A. They were supported by reason and evidence.
B. They were resolved with relatively few consequences.
C. They were all the result of racist agendas and policies.
D. They were all driven by fear during a time of crisis.
Based on the context of the question, the commonality among the conflicts in America is not that they were supported by reason and evidence or resolved with relatively few consequences. Additionally, they were not all the result of racist agendas and policies.
The common aspect among the conflicts in America is that they were all driven by fear during a time of crisis. This fear could have been related to various factors such as political, social, or economic instability, which fueled the conflicts.
Therefore, the correct answer is:
D. They were all driven by fear during a time of crisis.
