I'm not sure of the exact word you are looking for, but the general idea is that the federal law will always reign supreme if there is ever a conflict between the federal and state laws. Federal law is superior or higher-ranking or more preferable, etc.
Here is the exact phrasing from Article VI of the US Constitution: "This Constitution, and the laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in the Constitution or laws of any State to the contrary notwithstanding."
Reconstruction continued until 1877 when President Rutherford Hayes was elected. His presidency allowed the South to regain political power and indirectly facilitated practices that prevented African-Americans and other minorities from enjoying the rights granted by the 13th Amendment
<span>They wanted to find gold and other resources.</span>
