While the nobility thus declined, the towns began rapidly to develop the elements of popular force. In 1120, a Flemish knight who might descend so far as to marry a woman of the plebeian ranks incurred the penalty of degradation and servitude. In 1220, scarcely a serf was to be found in all Flanders. The Countess Jane had enfranchised all those belonging to her as early as 1222. In 1300, the chiefs of the gilden, or trades, were more powerful than the nobles. These dates and these facts must suffice to mark the epoch at which the great mass of the nation arose from the wretchedness in which it was plunged by the Norman invasion, and acquired sufficient strength and freedom to form a real political force. But it is remarkable that the same results took place in all the counties or dukedoms of the Lowlands precisely at the same period. In fact, if we start from the year 1200 on this interesting inquiry, we shall see the commons attacking, in the first place, the petty feudal lords, and next the counts and the dukes themselves, often as justice was denied them. In 1257, the peasants of Holland and the burghers of Utrecht proclaimed freedom and equality, drove out the bishop and the nobles, and began a memorable struggle which lasted full two hundred years. In 1260, the townspeople of Flanders appealed to the king of France against the decrees of their count, who ended the quarrel by the loss of his county. In 1303, Mechlin and Louvain, the chief towns of Brabant, expelled the patrician families. A coincidence like this cannot be attributed to trifling or partial causes, such as the misconduct of a single count, or other local evil; but to a great general movement in the popular mind, the progress of agriculture and industry in the whole country, superinducing an increase of wealth and intelligence, which, when unrestrained by the influence of a corrupt government, must naturally lead to the liberty and the happiness of a people. The weaving of woollen and linen cloths was one of the chief sources of this growing prosperity. A prodigious quantity of cloth and linen was manufactured in all parts of the Netherlands. The maritime prosperity acquired an equal increase by the carrying trade, both in imports and exports. Whole fleets of Dutch and Flemish merchant ships repaired regularly to the coasts of Spain and Languedoc. Flanders was already become the great market for England and all the north of Europe. The great increase of population forced all parts of the country into cultivation; so much so, that lands were in those times sold at a high price, which are to-day left waste from imputed sterility.