In which form or system of government is the state or local government final authority

A confederation is a type of government in which the state or local government is the final authority.

The difference between a federation and a confederation, which can be mistaken, is the degree of autonomy that the states and the central government withhold. In a federation, the states and local governments are only partially self-governing, the division of power is divided between the states and the central government. A confederation is association of independent states, in this case, states retain their sovereignty and the right to abolish the central government.

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while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.