What major geographic area splits the national divisions of the Hell's Angels?

The major geographic area that splits the national divisions of the Hell's Angels is Omaha, Nebraska. This city serves as a significant geographic and operational boundary within the club's organizational structure. The Hell's Angels Motorcycle Club is divided into several chapters, with each chapter representing a specific region. Omaha is strategically located and has historically served as a dividing line that separates different regions or divisions of the club, effectively influencing the interactions and jurisdictional boundaries of these chapters.

The other options do not fulfill this function. While the Mississippi River and the Rocky Mountains are prominent geographic features, neither is recognized as a dividing line for the Hell's Angels divisions. Similarly, the Great Lakes, although significant in size and influence, do not hold the same relevance in terms of dividing the club's territory as does Omaha. This understanding of geographic influence is essential for grasping how organized crime groups like the Hell's Angels operate across various regions.