As it pertains to dual federalism, the amendment ensured states retained those powers that were not given to the federal government.

The answer to this question is the tenth amendment
The tenth amendment stated that the power that is not delegated to the federal government and not reserved by the states, will fall to the hand of the people.
This implicates that there are different and  separate rights and responsibilities that held by the federal government, the states, and the citizens

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