Final answer:
Trade regulation under the Articles of Confederation was limited as the national government had no authority to regulate commerce, whereas the Constitution granted the federal government significant power over trade.
Step-by-step explanation:
When comparing trade regulation under the Articles of Confederation to that under the Constitution, it is clear that the Constitution granted the national government more power over trade. Under the Articles of Confederation, the national government was quite weak and lacked the authority to regulate commerce, levy taxes, or enforce laws without a national judiciary. In contrast, the Constitution established a stronger federal structure with the power to regulate interstate commerce and address economic issues more effectively.