GRAND FORKS — Towns across the state are preparing to celebrate the 250th anniversary of the signing of the Declaration of Independence by the nation’s forefathers, but excitement especially is growing in the capital city and the western community of Medora. Bismarck-Mandan will be the site of numerous special events and displays that pay homage to this historic milestone, including the “Bismarck Red, White and Boom!” event on July 4, which will…