Watt states that Islam is still, in many ways, a man's religion. However, he states that Muhammad, in the historical context of his time, can be seen as a figure who testified on behalf of women's rights and improved things considerably. Watt explains the historical context surrounding women's rights at the time of Muhammad: It appears that in some parts of Arabia, notably in Mecca, a matrilineal system was in the process of being replaced by a patrilineal one at the time of Muhammad. Growing prosperity caused by a shifting of trade routes was accompanied by a growth in individualism. Men were amassing considerable personal wealth and wanted to be sure that this would be inherited by their actual sons, and not simply by an extended family of their sisters' sons. Muhammad, however, by instituting rights of property ownership, inheritance, education and divorce, gave women certain basic safeguards.