Since the amalgamation, there have been indirect conflict between all because of the amalgamation process and division of power Among then. If not for the amalgamation, there won't have been conflict among us because we all would have been independent to each other and the peaceful coexistence would have continued because there won't have been quest for superiority among us.
You are right. That amalgamation of a thing was what created the struggle for superiority that was not in existence before because now everybody is literally fighting for space in one Nigeria instead of being independent and coexist in peace through trades and other meaningful relationships.
I have a feeling that without that 1914 move maybe we would have still be leaving in peaceful coexistence, harmony and respect for our diversity and not the power tussel or bias that we are filled with today. Most times I used to sit within myself and and say maybe teaching our kids this history properly like how we used to coexist peacefully in the past would bring back that unity that exists between us before.