Answer:
It gives Congress authority over trade between states.
Explanation:
The Commerce Clause in the Constitution gives Congress the power "to regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes." This has been interpreted by the Supreme Court to allow the federal government to regulate economic activity that has a substantial effect on interstate commerce, even if that activity is entirely within a single state.
This has led to significant controversy over the balance of power between the federal government and the states. The Commerce Clause has been used to justify federal regulation of a wide range of activities, including those that were traditionally seen as matters of state or local concern. This has led to concerns that the Commerce Clause allows the federal government to interfere with states' rights and autonomy.
Therefore, the correct answer is that the Commerce Clause gives Congress authority over trade between states, which can interfere with states' rights.