When the period began, England was a Commonwealth. Charles I., by obstinate insistence upon absolutism, by fickleness and faithlessness, had increased and strengthened his enemies. Parliament had seized the reins of government in 1642, had completely established its authority at Naseby in 1645, and had beheaded the king in front of his own palace in 1649. The army had accomplished these results, and the army proposed to enjoy the reward. Cromwell, the idolized commander of the Ironsides, was placed at the head of the new-formed state with the title of Lord Protector; and for five years he ruled England, as she had been ruled by no sovereign since Elizabeth. He suppressed Parliamentary dissensions and royalist uprisings, humbled the Dutch, took vengeance on the Spaniard, and made England indisputably mistress of the ocean. He was succeeded, at his death in 1658, by his son Richard; but the father's strong instinct for government had not been inherited by the son. The nation, homesick for monarchy, was tiring of dissension and bickering, and by the Restoration of 1660 the son of Charles I became Charles II of England. Scarcely had the demonstrations of joy at the Restoration subsided when London was visited by the devouring plague of 1665. All who could fled from the stricken city where thousands died in a day. In 1666 came the great fire which swept from the Tower to the Temple; but, while it destroyed a vast deal of property, it prevented by its violent purification a recurrence of the plague, and made possible the rebuilding of the city with great sanitary and architectural improvements. Charles possessed some of the virtues of the Stuarts and most of their faults. His arbitrary irresponsibility shook the confidence of the nation in his sincerity. Two parties, the Whigs and the Tories, came into being, and party spirit and party strife ran high. The question at issue was chiefly one of religion. The rank and file of Protestant England was determined against the revival of Romanism, which a continuation of the Stuart line seemed to threaten. Charles was a Protestant only from expediency, and on his deathbed accepted the Roman Catholic faith; his brother James, Duke of York, the heir apparent, was a professed Romanist.