The primary cause of this great change lay in the recovery of its older strength by the Crown. Through the last hundred and fifty years the monarchy had been hampered by the pressure of the war. Through the last fifty it had been weakened by the insecurity of a disputed succession. It was to obtain supplies for the strife with Scotland and the strife with France that the earlier Plantagenets had been forced to yield to the ever-growing claims which were advanced by the Parliament. It was to win the consent of Parliament to its occupation of the throne and its support against every rival that the House of Lancaster bent yet more humbly to its demands. But with the loss of Guienne the war with France came virtually to an end. The war with Scotland died down into a series of border forays. The Wars of the Roses settled the question of the succession, first by the seeming extinction of the House of Lancaster, and then by the utter ruin of the House of York. The royal treasury was not only relieved from the drain which had left the crown at the mercy of the Third Estate; it was filled as it had never been filled before by the forfeitures and confiscations of the civil war. In the one bill of attainder which followed Towton twelve great nobles and more than a hundred knights and squires were stripped of their estates to the king's profit. Nearly a fifth of the land is said to have passed into the royal possession at one period or other of the civil strife. Edward the Fourth and Henry the Seventh not only possessed a power untrammelled by the difficulties which had beset the Crown since the days of Edward the First, but they were masters of a wealth such as the Crown had never known since the days of Henry the Second. [Sidenote: Its New Policy]