If this process of growth bring a people to the borders of a desert, there they halt perhaps for a time, but only, as it were, to take breath for a stride across the sand to the nearest oasis. The ancient Egyptians advanced by a chain of oases--Siwa, Angila, Sella and Sokna, across the Libyan Desert to the Syrtis Minor. The Russians in the last twenty-five years have spread across the arid wastes of Turkestan by way of the fertile spots of Khiva, Bukhara and Merv to the irrigated slopes of the Hindu Kush and Tian Shan Mountains. The French extended the boundaries of Algiers southward into the desert to include the caravan routes focusing at the great oases of Twat and Tidekelt, years before their recent appropriation of the western Sahara. [Sidenote: Marks of decline.] As territorial expansion is the mark of growth, so the sign of decline is the relinquishment of land that is valuable or necessary to a people's well-being. The gradual retreat of the Tartars and in part also of the Kirghis tribes from their best pasture lands along the Volga into the desert or steppes indicates their decrease of power, just as the withdrawal of the Indians from their hunting grounds in forest and prairie was the beginning of their decay. Bolivia maimed herself for all time when in 1884 she relinquished to Chile her one hundred and eighty miles of coast between the Rio Lao and the twenty-fourth parallel. Her repeated efforts later to recover at least one seaport on the Pacific indicate her own estimate of the loss by which she was limited to an inland location, and deprived of her maritime periphery.[286] [Sidenote: Interpretation of scattered and marginal location.]