Final answer:
George Washington, James Madison, Alexander Hamilton, and the 'Grand Committee' played significant roles at the Constitutional Convention in shaping the United States Constitution.
Step-by-step explanation:
The roles of George Washington, James Madison, Alexander Hamilton, and the 'Grand Committee' at the Constitutional Convention were significant in shaping the United States Constitution. George Washington, as the president of the convention, provided leadership and guidance throughout the process. James Madison and Alexander Hamilton, both Federalists, played key roles in advocating for a strong federal government and were instrumental in drafting the Constitution. The 'Grand Committee' was a group of delegates who worked together to resolve conflicts and disagreements during the convention, contributing to the compromises that led to the final document.