Final answer:
Rhode Island and O New York were the two original thirteen states that refused to attend the Constitutional Convention.
Step-by-step explanation:
The original thirteen states that refused to attend the Constitutional Convention were Rhode Island and O New York. While Rhode Island opposed the idea of a strong central government, New York was divided on the matter and eventually declined to send delegates. However, it is important to note that both states later ratified the U.S. Constitution.
Learn more about Refusal of Rhode Island and New York to attend the Constitutional Convention