la migrazione fu indotta dall'espansione islamica in India
cito da:
http://radoc.net:8088/RADOC-27-RELIGION.htm
This exodus was prompted by a succession of raids led by Mohammed of Ghazni between 1000 AD and 1027 AD in his attempt to spread Islam into Northern India. The Hindu response was to assemble military forces known as Rajputs, conscripted from various language groups, though ones close enough to share the same genetic descent. The linguistic nature of the Romani language strongly suggests that it began as a composite military lingua franca (under the same circumstances that gave rise to the Urdu language), and for which the name Rajputic has been proposed. This only later crystallized into an ethnic mother-tongue when the troops and their camp-followers reached Anatolia and began to marry within the group and produce new generations of children. Because the first written account of the appearance of Romanies in the Byzantine Empire dates from 1054 AD, we can assume that it was reached within fifty years or less of leaving India. If so, it was over two centuries before their descendants finally entered Europe—again because of the spread of Islam, this time towards the West.