Extract the answer to the question from the following context. Question: What era was where the Buddhism flourished? Context: Mahayana Buddhism flourished in India from the 5th century CE onwards, during the dynasty of the Guptas. Mahāyāna centres of learning were established, the most important one being the Nālandā University in north-eastern India.
The answer to this question is:
during the dynasty of the Guptas