How did the national system of courts help to ensure justice for all Americans?

The national system of courts established a consistent legal framework across the United States, ensuring that laws were applied uniformly regardless of state or local variations. This system allowed for the protection of individual rights and provided a mechanism for resolving disputes fairly. By enabling appeals to higher courts, the system also ensured oversight and accountability, fostering public confidence in the rule of law. Ultimately, it helped uphold the principle of justice as a fundamental right for all Americans.