The Judiciary Act of 1789 was significant for several reasons, but the most notable aspect is that it established the federal judiciary system in the United States. Among the options provided, the most accurate statement regarding its importance is:
It was one of the first acts of the first Congress.
The act laid the groundwork for the federal court system, including the establishment of the Supreme Court, district courts, and circuit courts. It defined the structure and jurisdiction of the federal judiciary and allowed for the creation of a system that balanced state and federal judicial authority. It did not give the Supreme Court sole ruling power over all judicial matters—state courts maintained their own authority.