First had come Berber Tarik, in 711, to overthrow the Visigothic Kingdom of Roderic, to spread the Moslem dominion as far as the mountains in the north and east and west from sea to sea. When the Berber tribe, the Syrians, and the Arabs had fallen to wrangling among themselves, Abdurrahman the Omayyad crossed from Africa to found the independent amirate, which in the tenth century became the Caliphate of Cordova. Meanwhile the Christians had been consolidating their forces in the mountain fastnesses of the north to which they had been driven, and under Alfonso I they founded the Kingdom of Galicia. Thence, gradually but irresistibly, presenting a bold front to the Moorish conqueror, they forced their way down into the plains of Leon and Castile, so that by the following century they had driven the Saracens south of the Tagus. Following up their advantage, they continued to press them, intent upon driving them into the sea, and they might have succeeded but for the coming of Yusuf ben Techufin, who checked the Christian conquest, hurled them back across the Tagus, and, master of the country to the south of it, founded there the Empire of the Almoravides. After these came the Almohades--the followers of the Mahdi--and the land rang for half a century with the clash of battle between Cross and Crescent, Castile, Leon, Aragon, and the new-born Kingdom of Portugal striving side by side to crush the common foe at Navas de Tolosa. In 1236 Leon and Castile--now united into one kingdom--in alliance with Aragon, wrested Cordova from the Moors; in 1248 Seville was conquered, and in 1265 Diego of Aragon drove the Saracen from Murcia, and thereby reduced the Moslem occupation to Granada and a line of Mediterranean seaboard about Cadiz, in which they remained until Ferdinand of Aragon and Isabella of Castile, by virtue of their marriage, had united the two crowns on the death (in 1474) of Henry IV, Isabella’s brother. * * * * * Ferdinand brought, with Aragon, Sicily, Sardinia, and Naples; Isabella brought, with Castile, Leon and the rest of the Spanish territory, saving Granada and that portion of the coast still in Moorish hands. And thus was founded, by the welding of these several principalities into one single state, that mighty Kingdom of Spain which Columbus was so soon to enrich by a new world. But though founded by this marriage, this kingdom still required consolidating and subjecting. Generations of misrule in Castile, culminating in the lax reigns of John II and Henry IV, had permitted the spread of a lawlessness so utter that its like was not to be found in any other state at that time. Anarchy was paramount mistress of the land, and Pulgar has left us a striking picture of the impossible conditions that prevailed.