The constitutions written by the states provided several important precedents for the later federal system created by the Constitution of 1787. One of the most important was the principle of:.

creating a written document as supreme law.

Explanation:The Constitution of the United States established America's national government and fundamental laws, and guaranteed certain basic rights for its citizens. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia.

The United States Constitution has served as the supreme law of the United States since taking effect in 1789. The document was written at the 1787 Philadelphia Convention and was ratified through a series of state conventions held in 1787 and 1788. Since 1789, the Constitution has been amended twenty-seven times; particularly important amendments include the ten amendments of the United States Bill of Rights and the three Reconstruction Amendments.