The correct answer is fewer disputes about state monopolies.
The Gibbons vs. Ogden Supreme Court case was an important one that took place during the early 19th century. This case dealt with steamboat licenses and monopolies on a multi-state level. In this case, the Supreme Court ruled that Congress did have the ability to regulate interstate commerce (aka trade between two different states). This resulted in fewer state monopolies being developed and increased competition in this industry.