28 HISTORY OF THE SIKHS CHAP. II own progenitors had before entered and defended and absorbed the dominions of Augustus and Trajan. Tughril Beg and Saladin are the counterparts of Stilicho and Theodoric, and the Mullas and Saiyids of Bagdad were as anxious for the conversion of unbelievers as the bishops and deacons of the Greek and Latin Churches. The migratory barbarians who fell upon Europe became Christians, and those who plundered Asia adopted, v/ith perhaps greater ease and ardour, the more congenial creed of Islam. Their vague unstable notions yielded to the authority of learning and civilization, and to the majesty of one omnipotent God, and thus armed with religion as a motive, and empire as an object, the Turks precipitated themselves upon India and upon the diminished provinces of the Byzantine Caesars. Muhammad crossed the Indus in the year 1001, not long after Shankar Acharj had vainly endeavoured to vades arrest the progress of heresy, and to give limits to the India, diversity of faith which perplexed his countrymen. AD. 1001. The Punjab was permanently occupied, and before the sultan's death, Kanauj and Gujrat had been overrun. The Ghaznivides were expelled by the Ghoris about 1183. Bengal was conquered by these usurpers, and when the Ibak Turks supplanted them in 1206, HinduHindustan becomes a stan became a separate portion of the Muhammadan separate world. During the next hundred and fifty years the portion of whole of India was subdued; a continued influx of the Muhammadan world Mughals in the thirteenth, and of Afghans in the fifteenth century, added to their successive authority under the Ibaks. as rulers, gradually changed the language and the A.D. 1206. thoughts of the vanquished. The Khiljis and Tughlaks and Lodis were too rude to be inquisitorial bigots; they had a lawful option in tribute, and taxation was more profitable, if less meritorious, than conversion. They adopted as their own the country which they had conquered. Numerous mosques attest their piety and munificence, and the introduction of the solar instead of the intractable lunar year, proves their attention to ordinary business and the wants of agriculture.^ The Muhammad in- 1 The solar, i.e. really sidereal year, called the 'Shabur San', or vulgarly the 'Sur San', that is, the year of (Arabic) months, was apparently introduced into the Deccan by Tughlak Shah towards, the middle of the fourteenth century of Christ, or between 1341 and 1344, and it is still used by the Marathas in all their more important documents, the dates being inserted in Arabic words written in Hindi (Marathi) characters. (Cf. Prinsep's Useful Tables, ii. 30, who refers to a Report by Lieut.Colonel Jervis, on Weights and Measures.) The other 'Fasli'. or 'harvest' years of other parts of India, were not introduced until the reigns of Akbar and Shah Jahan, and they mostly