Strictly speaking, ‘Aryan’ is a linguistic term, like ‘Indo-European’. None the less, it has customarily and conveniently been used to identify one group of those peoples whose movements make up so much of the dynamic of ancient history in other parts of the Old World after 2000 BC. At about the time when other Indo-Europeans were flowing into Iran, somewhere about 1750 BC, a great influx began to enter India from the Hindu Kush. This was the beginning of centuries during which waves of these migrants washed deeper and deeper into the Indus valley and the Punjab and eventually reached the upper Ganges. They did not obliterate the native peoples, though the Indus valley civilization crumbled. No doubt much violence marked their coming, for the Aryans were warriors and nomads, armed with bronze weapons, bringing horses and chariots, but they settled and there are plenty of signs that the native populations lived on with them, keeping their own beliefs and practices alive. There is much archaeological evidence of the fusion of Harappan with later ways. However qualified, this was an early example of the assimilation of cultures which was always to characterize Indian society and was eventually to underlie classical Hinduism’s remarkable digestive power.
It seems clear that the Aryans brought to India no culture so advanced as that of the Harappans. It is a little like the story of the coming of Indo-Europeans in the Aegean. Writing, for example, disappears and does not emerge again until the middle of the first millennium BC; cities, too, have to be reinvented and when they are again to be found they lack the elaboration and order of their Indus valley predecessors. Instead, the Aryans appear slowly to have given up their pastoral habits and settled into agricultural life, spreading east and south from their original settlement areas in a sprawl of villages. This took centuries. Not until the coming of iron was it complete and the Ganges valley colonized; iron implements made cultivation easier. Meanwhile, together with this physical opening up of the northern plains, the invaders had made two decisive contributions to Indian history, in its religious and in its social institutions.
The Aryans laid the foundations of the religion which has been the heart of Indian civilization. This centred on sacrificial concepts; through sacrifice the process of creation which the gods achieved at the beginning of time was to be endlessly repeated. Agni, the god of fire, was very important, because it was through his sacrificial flames that men could reach the gods. Great importance and standing was given to the
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