The Three Lower Counties had broken away from Pennsylvania in June 1776. They adopted a constitution and became the Delaware State, the first of all the colonies to call themselves a state. After the Revolutionary War, John Dickinson and George Read of Delaware assisted in writing a constitution for the new nation. On Dec. 7, 1787, Delaware ratified the United States Constitution and became the 1st state in the Union. Celebrate your state's history by displaying state symbols, animals, and state flags. Find your supplies at Flagandbanner.com today.