Answer:
Option B: Control of commerce.
Explanation:
Before the Constitutional Convention and the creation of the Constitution of the United States, the recently independent states were having issues controlling and regulating national and international commerce.
Some states would compete with others to gain economic advantage, and the Confederation lacked to power to enforce regulatory laws to control and set rates, or coordinate retaliatory trade policies with foreign countries.
This was a major problem at the time that was getting out of hand. Although the purpose of the constitutional convention was to revise the laws of the current governments, the people who proposed it had something else in mind; a complete remake of the government system, the creation of a Federal Court, and with it, the power to enforce laws through all the states.
During the convention, George Washington was elected president of the convention.
