What role do district courts play in federal judicial system

District courts have original jurisdiction over most federal cases.

The United States district courts constitute the general trial courts of the United States federal court system. Both civil and criminal cases are filed in the district court, which is a court of law, equity, and admiralty. Each federal judicial district has at least one courthouse, and severak districts have more than one.

hey have original jurisdiction over most federal cases.

Explanation:

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answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.