From remote antiquity Syria was in the condition just described, and thus destined to become subject to foreign rule. Chaldaea, Egypt, Assyria, and Persia presided in turn over its destinies, while Macedonia and the empires of the West were only waiting their opportunity to lay hold of it. By its position it formed a kind of meeting-place where most of the military nations of the ancient world were bound sooner or later to come violently into collision. Confined between the sea and the desert, Syria offers the only route of easy access to an army marching northwards from Africa into Asia, and all conquerors, whether attracted to Mesopotamia or to Egypt by the accumulated riches on the banks of the Euphrates or the Nile, were obliged to pass through it in order to reach the object of their cupidity. It might, perhaps, have escaped this fatal consequence of its position, had the formation of the country permitted its tribes to mass themselves together, and oppose a compact body to the invading hosts; but the range of mountains which forms its backbone subdivides it into isolated districts, and by thus restricting each tribe to a narrow existence maintained among them a mutual antagonism. The twin chains, the Lebanon and the Anti-Lebanon, which divide the country down the centre, are composed of the same kind of calcareous rocks and sandstone, while the same sort of reddish clay has been deposited on their slopes by the glaciers of the same geological period.* * Drake remarked in the Lebanon several varieties of limestone, which have been carefully catalogued by Blanche and Lartet. Above these strata, which belong to the Jurassic formation, come reddish sandstone, then beds of very hard yellowish limestone, and finally marl. The name Lebanon, in Assyrian Libnana, would appear to signify "the white mountain;" the Amorites called the Anti-Lebanon Saniru, Shenir, according to the Assyrian texts and the Hebrew books.