Answer:
commerce.
Step-by-step explanation:
Gibbons v. Ogden was a civil case that was decided in 1824. In it, the United States' Supreme Court gave a ruling by ascertaining the tenet that states do not have the jurisdiction granted by legislative enactment to halts or obstructs the United States Congress power to regulate commerce.
Hence, the main point of Gibbons v. Ogden was mainly about the power of Congress to regulate COMMERCE.