Who were the first known peoples to call themselves arya?

Aryan, name originally given to a people who were said to speak an archaic Indo-European language and who were thought to have settled in prehistoric times in ancient Iran and the northern Indian subcontinent.

Explanation:

on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.