BBC on AIT
From The BBC: Aryan Invasion Theory.
How about the possibility that Indian religion is indigenous, while there was an Aryan influx, if not invasion? This would answer to much of the confusion.
One of the most controversial ideas about Hindu history is the Aryan invasion theory.
This theory, originally devised by F. Max Muller in 1848, traces the history of Hinduism to the invasion of India’s indigenous people by lighter skinned Aryans around 1500 BCE.
The theory was reinforced by other research over the next 120 years, and became the accepted history of Hinduism, not only in the West but in India.
But many people argue that there is now evidence to show that Muller, and those who followed him, were wrong.
Others, however, believe that the case against the Aryan invation theory is far from conclusive.