Although the overall causes of Shay's Rebellion were somewhat complicated, the most direct factor was "high taxes" since many people didn't believe the federal government should tax consumer goods.
Describing the struggles of the urban poor.
Developed as needed. I.E. Homeland Security after 9/11.
Soc. answer. as any group gets bigger, so the top of the triangle will to, so to bloated, too many people are paper pushers, and pencil sharperners.