Final answer:
Charles Pinckney worked with a Congressional Committee to draft amendments for the Articles of Confederation constitution.
Step-by-step explanation:
Charles Pinckney played an important role with the Articles of Confederation constitution by working with a Congressional Committee to draft amendments for the document. In February 1787, Pinckney was able to persuade the "Confederation Congress" to endorse a meeting in Philadelphia for the purpose of revisiting the Articles of Confederation. However, instead of amending the Articles, the delegates at the meeting ultimately drafted an entirely new constitution, known as the Constitution of the United States.