Why are the federal district courts the major part of the court system?

federal law is the utmost sector of government

Explanation:

Federal district courts are the workhorses of the federal judiciary. Just about every civil or criminal case heard in the federal courts starts at the district court level. District court judges review petitions, hear motions, hold trials, issue injunctions, and keep the wheels of justice spinning.

Explanation:

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gaius cassius longinus and marcus junius brutus, former enemies of julius caesar who'd joined the roman senate, led caesar's assassination, dubbing themselves "the liberators." and the second one is   the assassination of julius caesar was the result of a conspiracy by many roman senators led by gaius cassius longinus, decimus junius brutus albinus, and marcus junius brutus. they stabbed caesar (23 times) to death in a location adjacent to the theatre of pompey on the ides of march 15 march 44 bc.

i believe your answer is d)