Final answer:
The Civil War Amendments demonstrated the supremacy of the national government by superseding state laws and enforcing principles of equality and freedom.
Step-by-step explanation:
The Civil War Amendments, which include the 13th, 14th, and 15th Amendments to the United States Constitution, demonstrated the supremacy of the national government by superseding state laws. These amendments were passed in the aftermath of the Civil War and aimed to ensure the rights and freedom of formerly enslaved African Americans.
The 13th Amendment abolished slavery, thereby invalidating any state laws that supported or allowed slavery. The 14th Amendment granted citizenship to all people born or naturalized in the United States, and it also prohibited states from denying anyone equal protection under the law. The 15th Amendment granted African American men the right to vote, overriding any state laws that attempted to prevent them from exercising this right based on their race.
By enforcing these amendments, the national government asserted its authority over state governments and ensured that the principles of equality and freedom were upheld throughout the country.
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