Collaborative Federalism

Famously, federalism combines self-rule with shared rule or unity with diversity. Typically, the mix is achieved by creating or preserving two levels of government, each with a direct relationship with the people, and by dividing power between them. Traditionally, unity is achieved through the exercise of power by the central government, in relation to the polity as a whole. Diversity is the consequence of the exercise of power by sub-national governments over a portion of the population, generally territorially identified. The boundaries of power between the two spheres are secured by entrenching them in a written Constitution established as fundamental law, which is interpreted and applied by a court or courts.