AAFTER THE MAURYAN EMPIRE BROKE APART in 185 B.C.E. (see “The Reign of Ashoka” in Chapter 3), India was politically divided into small kingdoms for several centuries. Only the Guptas in the fourth century would emerge to unite much of north India, though their rule was cut short by the invasion of the Huns in about 450. A few centuries later, India was profoundly shaped by Turkish nomads from Central Asia who brought their culture and, most important, Islam to India. Despite these events, the lives of most Indians remained unchanged, with the majority of the people living in villages in a society defined by caste.