From 1237 to 1240 the Khan Batu led his army of 600,000 men, with appalling destruction, across the various principalities of Russia. Weakened by their feuds, severed by their selfish rivalries, the various provinces fell one by one under the feet of the merciless invaders. Rape, murder, fire, and pillage were the invariable sequels of success. The Russians appealed to the nations of the nearer west to help them to dam this Asiatic flood, but the Latin Christians were not minded to stir themselves for semi-barbarians who did not respect the Pope. When the Khan passed over the prostrate body of Russia and advanced still further, in his determination to conquer an earth of which he knew less than a child in a modern infant-school, the Poles and Hungarians at length spread their barrier of steel across his path. But the check did not now profit Russia. Batu retired upon Russia, built a city, Sarai, on the banks of the Volga (beyond the limits of the principalities), and began a life of organised parasitism upon the unfortunate people. The comparative unity brought about by their Norse defenders had prepared the way for the Khan. The Khan was to prepare the way for the Moscovite. Again we may ignore the crowded details, the rise and fall and eternal feuds of petty princes, of the Russian chronicle. What matters is that the entire country which was then known as Russia was overspread by a network of tax-gatherers, and the people learned to tremble at the commands of a distant autocrat. At Sarai the Mongols established a court of barbaric magnificence, and this in time declared itself independent of the Tatar Empire in Asia and sought the nourishment of its luxury in Russia. The western sovereignty came to be known throughout Europe as the Golden Horde, and the western nations heard with indifference the cynical extravagance and the occasional brutality with which it treated schismatic Slavs.