Nevertheless , scholars used Muller 's invasion theory to propose their own visions of racial conquest through South Asia and the Indian Ocean .
Muller was careful to note in his later work that he thought Aryan was a linguistic category rather than a racial one .
Scholars used Muller 's invasion theory to propose their own visions of racial conquest through South Asia and the Indian Ocean .
Muller was careful to note in his later work that he thought Aryan was a linguistic category rather than a racial one .