What serves as the dividing line for the national division of the Hell's Angels?

The correct answer highlights Omaha, Nebraska, as a significant geographic marker for the national division of the Hell's Angels motorcycle club. Omaha serves as a central point that effectively divides the club's operations and jurisdictions across different regions of the United States. This division is crucial for organizing the club's chapters, facilitating communication, and distributing control over various territories to prevent conflicts among members and reduce competition for resources.

The choice of Omaha is rooted in its geographical location, which is strategically positioned to separate distinct areas of influence for the Hell's Angels. This positioning allows the organization to maintain order and manage its activities across various states efficiently. In the context of organized crime, knowing how organizations like the Hell's Angels delineate territorial boundaries is essential for understanding their structure, operations, and interactions with law enforcement.

While the other options represent major cities with historical significance or connections to organized crime, they do not serve the same purpose as Omaha in terms of division of jurisdiction for the Hell's Angels.