历史上古印度西北部作为中亚地区通往传说中的富庶天国印度的走廊地带一直是许多游牧民族迁徙、征战及建立王朝统治的必争之地。由此也带来不同民族、文化及信仰的混杂与交融。由于文献资料缺乏,历史学家对这一方面的研究工作常常举步维艰,以至于这一地区的历史面貌长期以来总给人一种模糊不清、异常混乱的 Historically the northwestern part of India, as the gateway to the legendary wealthy kingdom of India in the Central Asian region, has been a must for many nomads to migrate, campaign and establish dynastic rule. This also brings about the mixture and blending of different nationalities, cultures and beliefs. Historically, historians have been struggling with research in this area because of a paucity of literature, so that the history of the region has always given a vague and abnormal chaos