Around 250 b. c., thousands of stupas were built in the gupta empire. what is a stupa?

A Stupa is actually a dome shaped Buddhist monument or we can say a hemispherical Buddhist structure which houses the relics of Buddha. These relics were worshiped by the followers of Buddhism. Another Buddhist monument called Chaitya or prayer hall usually contains a stupa. Thousands of stupas were built during the ancient India.

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the abbasid caliphate was not affected by conflicts within the muslim community".