Final answer:
The Aryan tribes were held together by their shared language (an early form of Sanskrit) and their shared cultural, religious, and social values, otherwise known as the Vedic religion.
Step-by-step explanation:
The common feature that held the Aryan tribes together was primarily their language. They spoke an early form of Sanskrit, which is a significant aspect of the Indo-European family of languages. Apart from language, their shared cultural beliefs, religious views, and social values, which are collectively termed as Vedic religion, also played a vital role in their unity. The Aryans had a strong belief in the Vedic gods and followed religious practices as prescribed in the Vedas, the oldest scriptures of Hinduism.
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