What did aryans contribute to early civilizatiin

The Aryans changed the local culture in countless ways, mainly by introducing Indians to horses and cattle, as well as Aryan gods and language. They brought a culture of ferocity and war as well as their warrior deities. They called themselves the "superior ones" or "noble ones." According to many historians, the Aryans enslaved a number of the native people in the valley and killed many more to send the message that they were not to be crossed. To other historians, their arrival was less an invasion than a mingling of cultures.
While the Aryans left a lasting impact on India, the region changed them as well. After spending centuries as nomads, the Aryans began settling down and farming the land.

REWORD WHAT I SAID I COPIED AND PASTED WHAT I FOUND ON THE INTERNET LOL ;)