The same political forecast, winning from very danger the elements of future security, was seen in the King's dealings with Scotland. From the moment when England finally abandoned the fruitless effort to subdue it the story of Scotland had been a miserable one. 'Whatever peace might be concluded, a sleepless dread of the old danger from the south tied the country to an alliance with France, and this alliance dragged it into the vortex of the Hundred Years' War. But after the final defeat and capture of David on the field of Neville's Cross the struggle died down on both sides into marauding forays and battles, like those of Otterburn and Homildon Hill, in which alternate victories were won by the feudal lords of the Scotch or English border. The ballad of "Chevy Chase" brings home to us the spirit of the contest, the daring and defiance which stirred Sidney's heart "like a trumpet." But the effect of the struggle on the internal development of Scotland was utterly ruinous. The houses of Douglas and of March which it raised into supremacy only interrupted their strife with England to battle fiercely with one another or to coerce their King. The power of the Crown sank in fact into insignificance under the earlier sovereigns of the line of Stuart which succeeded to the throne on the extinction of the male line of Bruce in 1371. Invasions and civil feuds not only arrested but even rolled back the national industry and prosperity. The country was a chaos of disorder and misrule, in which the peasant and the trader were the victims of feudal outrage. The Border became a lawless land, where robbery and violence reigned utterly without check. So pitiable seemed the state of the kingdom that at the opening of the fifteenth century the clans of the Highlands drew together to swoop upon it as a certain prey; but the common peril united the factions of the nobles, and the victory of Harlaw saved the Lowlands from the rule of the Celt.

A great name at last broke the line of the Scottish kings. Schooled by a long captivity in England, James the First returned to his realm in 1424 to be the ablest of her rulers as he was the first of her poets. In the twelve years of a wonderful reign justice and order were restored for the while, the Scotch Parliament organized, the clans of the Highlands assailed in their own fastnesses and reduced to swear fealty to the "Saxon" king. James turned to assail the great houses; but feudal violence was still too strong for the hand of the law, and a band of ruffians who burst into his chamber left the King lifeless with sixteen stabs in his body. His death in 1437 was the signal for a struggle between the House of Douglas and the Crown which lasted through half a century. Order however crept gradually in; the exile of the Douglases left the Scottish monarch supreme in the Lowlands; while their dominion over the Highlands was secured by the ruin of the Lords of the Isles. But in its outer policy the country still followed in the wake of France; every quarrel between French King and English King brought danger with it on the Scottish border; and the war of Brittany at once set James the Fourth among Henry's foes. James welcomed the fugitive pretender at his court after his failure in Ireland, wedded him to his cousin, and in 1497 marched with him to the south. Not a man however greeted the Yorkist claimant, the country mustered to fight him; and an outbreak among his nobles, many of whom Henry had in his pay, called the Scot-King back again. Abandonment of the pretender was the first provision of peace between the two countries. Forced to quit Scotland the youth threw himself on the Cornish coast, drawn there by a revolt in June, only two months before his landing, which had been stirred up by the heavy taxation for the Scotch war, and in which a force of Cornishmen had actually pushed upon London and only been dispersed by the King's artillery on Blackheath. His temper however shrank from any real encounter; and though he succeeded in raising a body of Cornishmen and marched on Taunton, at the approach of the royal forces he fled from his army, took sanctuary at Beaulieu, and surrendered on promise of life. But the close of this danger made no break in Henry's policy of winning Scotland to a new attitude toward his realm. The lure to James was the hand of the English King's daughter, Margaret Tudor. For five years the negotiations dragged wearily along. Tho bitter hate of the two peoples blocked the way, and even Henry's ministers objected that the English crown might be made by the match the heritage of a Scottish king. "Then," they said, "Scotland will annex England." "No," said the King with shrewd sense; "in such a case England would annex Scotland, for the greater always draws to it the less." His steady pressure at last won the day. In 1502 the marriage treaty with the Scot-King was formally concluded; and quiet, as Henry trusted, secured in the north.

The marriage of Margaret was to bring the House of Stuart at an after time to the English throne. But results as momentous and far more immediate followed on the marriage of Henry's sons. From the outset of his reign Henry had been driven to seek the friendship and alliance of Spain. Though his policy to the last remained one of peace, yet the acquisition of Brittany forced him to guard against attack from France and the mastery of the Channel which the possession of the Breton ports was likely to give to the French fleet. The same dread of French attack drew Ferdinand of Aragon and Isabel of Castile, whose marriage was building up the new monarchy of Spain, to the side of the English King; and only a few years after his accession they offered the hand of their daughter Catharine for his eldest son. But the invasion of Italy by Charles the Eighth drew French ambition to a distant strife, and once delivered from the pressure of immediate danger Henry held warily back from a close connection with the Spanish realms which might have involved him in continental wars. It was not till 1501 that the marriage-treaty was really carried out. The Low Countries had now passed to the son of Mary of Burgundy by her husband Maximilian, the Austrian Archduke Philip. The Yorkist sympathies of the Duchess Margaret were shared by Philip, and Flanders had till now been the starting-point of the pretenders who had threatened Henry's crown. But Philip's marriage with Juana, the daughter of Ferdinand and Isabel, bound him to the cause of Spain, and it was to secure his throne by winning Philip's alliance, as well as to gain in the friendship of the Low Countries a fresh check upon French attack, that Henry yielded to Ferdinand's renewed demand for the union of Arthur and Catharine. The match was made in blood. Henry's own temper was merciful and even generous; he punished rebellion for the most part by fines rather than bloodshed, and he had been content to imprison or degrade his rivals. But the Spanish ruthlessness would see no living claimant left to endanger Catharine's throne, and Perkin Warbeck and the Earl of Warwick were put to death on a charge of conspiracy before the landing of the bride.

Catharine, however, was widow almost as soon as wife, for only three months after his wedding Arthur sickened and died. But a contest with France for Southern Italy, which Ferdinand claimed as king of Aragon, now made the friendship of England more precious than ever to the Spanish sovereigns; and Isabel at once pressed for her daughter's union with the King's second son, Henry, whom his brother's death left heir to the throne. Such a union with a husband's brother startled the English sovereign. In his anxiety, however, to avoid a breach with Spain he suffered Henry to be betrothed to Catharine, and threw the burden of decision on Rome. As he expected, Julius the Second declared that if the first marriage had been completed to allow the second was beyond even the Papal power. But the victories of Spain in Southern Italy enabled Isabel to put fresh pressure on the Pope, and on a denial being given of the consummation of the earlier marriage Julius was at last brought to sign a bull Legitimating the later one. Henry, however, still shrank from any real union. His aim was neither to complete the marriage, which would have alienated France, nor to wholly break it off and so alienate Spain. A balanced position between the two battling powers allowed him to remain at peace, to maintain an independent policy, and to pursue his system of home-government. He met the bull therefore by compelling his son to enter a secret protest against the validity of his betrothal; and Catharine remained through the later years of his reign at the English court betrothed but unmarried, sick with love-longing and baffled pride.