Final answer:
Under the Articles of Confederation, trade was not regulated by the federal government. However, the U.S. Constitution granted the federal government the power to regulate interstate commerce and impose taxes.
Step-by-step explanation:
Under the Articles of Confederation, trade was not regulated by the federal government. Congress had the power to pass laws for the states, but it could not regulate trade or tax the states. Additionally, without a national judiciary, Congress was unable to enforce its laws. This created problems and limitations in effectively managing trade within the country.
However, under the U.S. Constitution, trade was regulated more effectively. The Constitution granted the federal government the power to regulate interstate commerce and impose taxes. This allowed for a more centralized approach to trade regulation and helped to create a more unified and cohesive trading system across the states.