Final answer:
The Articles of Confederation created a weak central government, while the Constitution established a stronger central government with a separate executive branch led by the President.
Step-by-step explanation:
The Articles of Confederation and the Constitution were both important documents in shaping the United States government, but they had significant differences. The Articles of Confederation created a weak central government with a one-house congress and no separate executive branch. On the other hand, the Constitution established a stronger central government with a separate executive branch headed by the President.
In Article II of the Constitution, the role of the executive branch, specifically the President, is outlined. The President is responsible for executing and enforcing the laws passed by Congress, serving as the Commander-in-Chief of the military, and representing the United States in diplomatic relations. The President also has the power to appoint judges, grant pardons, and propose legislation to Congress.