Delaware ratified the US Constitution on December 7, 1787, becoming the first official state under the Constitution. The Confederation Congress sent the document to the states … on September 28, 1787. Delaware ratified the US Constitution on December 7, 1787, becoming the first official state under the Constitution.o state does. In fact, only about 30 of the 50 states actually have an official language [English] on the books. [1] New Mexico operates as a bilingual state, in English and … Spanish.