It can be said that Delaware is special in that it was the first state to ratify the US Constitution. Additionally, Delaware was a slave holding state during the US Civil War. The number of slaves there however, numbered no more than 1,000.
Ratification of the Constitution by the State of Delaware, December 7, 1787. Delaware was the first state to ratify the Constitution. Delaware's ratification message was short and to the point. Refer to: http://www.usconstitution.net/rat_de.html