The correct answer to this open question is the following.
The issue during the Constitutional Convention that most divided the delegates was the issue of power; who should have more power, the federal government or the states.
Twelve states sent their delegates to the Constitutional Convention in Philadelphia, Pennsylvania, from May to September 1787. The idea was to analyze the Articles of Confederation and to make the proper changes due to the fact that the Articles of Confederation had left a weak central government in the hands of Congress. This issue divided the delegates that argued and debated over the issue of power.
