The Philadelphia Centennial of 1876, held to celebrate the 100th anniversary of the signing of Declaration of Independence, sparked an interest in the history and accomplishments of the country's forefathers. (nps.gov)
The part about the position of each party refers only to the event of an unilateral declaration of independence from Scotland. (politics.stackexchange.com)
The regional elections were called by Spain's Prime Minister Mariano Rajoy hours after the Catalan parliament made a unilateral declaration of independence on 27 October. (businessinsider.com)