As aryans conquered the indigenous population, what consequences followed?

It is that the debate on the Aryan question has been highly contentious, with historians adopting strident and extreme positions, not seeing that there can be both continuities and discontinuities in the development of Indian civilization. It has also diverted many of India's historians from equally (or more) important tasks - such as describing and integrating those periods of Indian history where considerable new archeological material is now available and needs to be incorporated into the presently known and documented view of Indian history.