what year was the us constitution ratified
The simple answer to this question is 1787; in that year, the Constitution was penned, edited, redrafted, and ratified on September 17th, 1787.
The Constitutional Convention began on May 25th 1787 and ended on September 17th, 1787; on September 17th, 1787, the Constitution was ratified and adopted as the primary piece of legislature with regard to the United States of America.