In what year did Rhode Island ratify the U.S. Constitution?

What is the two-letter postal abbreviation for Rhode Island? Which state uses the postal abbreviation "RI"? Providence is the capital of which state? What is the largest city in Rhode Island by population? What is the official nickname of Rhode Island? What is the state bird of Rhode Island? What is the state flower of Rhode Island? What is the two-letter postal abbreviation for South Carolina?