The history of the United Provinces, and of Holland especially, from the close of the Spanish rule down to the establishment of the modern monarchy of the Netherlands, is distinguished for its manifestation of a permanent struggle between different opposite principles. Liberty and authority, municipal principle and state principle, republic and monarchy, the spirit of federal isolation and that of centralization, appear to give battle to each other upon a territory itself with difficulty defended from the waves of the ocean by the watchful industry of its inhabitants.