How did the April 1866 Civil Rights Act contradicted the Supreme Court's 1857 Dred Scott decision?

Civil Rights Act of 1866

First United States federal law to define citizenship and affirm that all citizens are equally protected by the law (especially African-Americans)

The Civil Rights Act of 1866 (14 Stat. 27–30, enacted April 9, 1866, but not ratified until 1870) was the first United States federal law to define citizenship and affirm that all citizens are equally protected by the law. It was mainly intended, in the wake of the American Civil War, to protect the civil rights of persons of African descent born in or brought to the United States.

Explanation:

Federalism

Explanation:

Federalism may be defined as the mixed form of the government or compound form which combines the general government with the regional government in single political system.

It is the system of government where the power is being divided between national government and the other states' government. It is opposite to the unitary form of government.

Thus federalism describes the preservation of some powers of the states but relegation of other power to the national government.