ACCORDING TO THE HISTORY & POPULAR CONVENTION THE ARYANS WERE A NOMADIC TRIBE. WHO CAME FROM CENTRAL & WESTERN  ASIA TO INDIAN SUBCONTINENT.

ENAMORED BY THE FAVORABLE CLIMATE & AMPLE NATURE  RESOURCES, THEY DECIDED TO THE STAY PUT, IN THE ENSUING BATTLE, WITH  THE INDIGENOUS POPULATION, THE PEACE LOVING & AGRARIAN SOCIETY WAS USURPED BY THE WARRIOR ARYANS.

THE DEFEATED PEOPLE WERE MENTALLY SUBJUGATED, PUT UNDER STRICT RULES & REGULATION & FORCED INTO SLAVERY SO AS THEY CAN NEVER REVOLT. LATER ON ONE OF THE ARYANS "MANU" IN HIS TREATISE

“MANUSMRITI” DIVIDED THE SOCIETY INTO FOUR CLASSES.

BRAHMIN, KSHATRIYA, VAISHYA
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