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There are over 200 nations around the globe with differing governmental structures. One of the key elements of these structures is the relationship between the central government and the subdivisional units of governments such as states or provinces. There are three basic models for ordering relations between central governments and local units: (a) a unitary system (in which ultimate power is held by the national government), (b) a confederal system (in which ultimate power is retained by the states), and (c) a federal system (in which governmental powers are divided between the national government and the states.

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-my question is How did the crisis of the Great Depression influence the doctrine of federalism?  Provide examples to support your arguments?

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