 Complete the following phrase:  This situation culminated in a revolution by the nobility and high bourgeoisie on December 1, 1640, 60 years after the crowning of Philip I. The plot was planned by Antão Vaz de Almada, Miguel de Almeida and João Pinto Ribeiro. They, together with several associates, killed Secretary of State Miguel de Vasconcelos and imprisoned the kings cousin, the Duchess of Mantua, who had governed Portugal in his name. The moment was well chosen, as Philips troops were at the time fighting the Thirty Years War and also facing a 