For nearly 900 years, from the middle of the 10t h century, Ladakh was an independent kingdom, its ruling dynasties descending from the kings of old Tibet. The kingdom attained its greatest geographical extent and glory in the early 17th century under the famous king Singge Namgyal, whose domain extended across Spiti and western Tibet right up to the Mayum-la, beyond the sacred sites of Mount Kailash and Lake Mansarovar.
Gradually, perhaps partly due to the fact that it was politically stable, Ladakh became recognized as the best trade route between the Punjab and Central Asia. For centuries it was traversed by caravans carrying textiles, spices, raw silk, carpets, dyestuffs, narcotics, etc. to the Central Asian towns of Yarkand and Khotan. On this long route, Leh was the midway stop, and developed into a bustling entrepot, its bazars thronged with merchants from distant countries.