SANSKRIT. The language of the Aryans of India was Sanskrit, an Indo-Aryan language.Old Indo-Aryan includes different dialects and linguistic states that are referred to in COMMON as Sanskrit.Aryans:The cities of the Harappan Culture had declined by 1500 B.C. Around this PERIOD, the speakers of the Indo-Aryan language, Sanskrit, entered northwest India from the Indo-Iranian region.Their INITIAL settlements were in the valleys of the northwest and the PLAINS of Punjab. Later, they moved into Indo-Gangetic plains. As they were mainly a cattle- keeping people, they were mainly in search of pastures.By the 6th century B.C., they had conquered all of North India, which they called Aryavarta.The Celtic languages are a group of related languages descended from Proto-Celtic. They form a branch of the Indo-European language family.