Ashoka Emperor of magadha

As a Buddhist emperor, Ashoka believed that Buddhism is beneficial for all human beings as well as animals and plants, so he built a number of stupas, Sangharama, viharas, chaitya, and residences for Buddhist monks all over South Asia and Central Asia. According to the Ashokavadana, he ordered the construction of 84,000 stupas to house the Buddhas relics.^[23] In the Aryamanjusrimulakalpa, Ashoka takes offerings to each of these stupas traveling in a chariot adorned with precious metals.^[23] He gave donations to viharas and mathas. He sent his only daughter Sanghamitra and son Mahindra to spread Buddhism in Sri Lanka (then known as Tamraparni). Ashoka also sent many prominent Buddhist monks (bhikshus) Sthaviras like Madhyamik Sthavira to modern Kashmir and Afghanistan; Maharaskshit Sthavira to Syria, Persia / Iran, Egypt, Greece, Italy and Turkey; Massim Sthavira to Nepal, Bhutan, China and Mongolia; Sohn Uttar Sthavira to modern Cambodia, Laos, Burma (old name Suvarnabhumi for Burma and Thailand), Thailand and Vietnam; Mahadhhamarakhhita stahvira to Maharashtra (old name Maharatthha); Maharakhhit Sthavira and Yavandhammarakhhita Sthavira toSouth India.

Ashoka also invited Buddhists and non-Buddhists for religious conferences. He inspired the Buddhist monks to compose the sacred religious texts, and also gave all types of help to that end. Ashoka also helped to develop viharas (intellectual hubs) such as Nalanda and Taxila. Ashoka helped to construct Sanchi and Mahabodhi Temple. Ashoka also gave donations to non-Buddhists. As his reign continued his even-handedness was replaced with special inclination towards Buddhism.^[34] Ashoka helped and respected both Sramans (Buddhists monks) and Brahmins (Vedic monks). Ashoka also helped to organise the Third Buddhist council (c. 250 BCE) at Pataliputra (today's Patna). It was conducted by the monk Moggaliputta-Tissa who was the spiritual teacher of the Mauryan Emperor Ashoka.

It is well known that Ashoka sent dütas or emissaries to convey messages or letters, written or oral (rather both), to various people. The VIth Rock Edict about "oral orders" reveals this. It was later confirmed that it was not unusual to add oral messages to written ones, and the content of Ashoka's messages can be inferred likewise from the XIIIth Rock Edict: They were meant to spread his dhammavijaya, which he considered the highest victory and which he wished to propagate everywhere (including far beyond India). There is obvious and undeniable trace of cultural contact through the adoption of the Kharosthi script, and the idea of installing inscriptions might have travelled with this script, as Achaemenid influence is seen in some of the formulations used by Ashoka in his inscriptions. This indicates to us that Ashoka was indeed in contact with other cultures, and was an active part in mingling and spreading new cultural ideas beyond his own immediate walls.^[35]

In his edicts, Ashoka mentions some of the people living in Hellenic countries as converts to Buddhism, although no Hellenic historical record of this event remains:
The 'Great Stupa' at Sanchi is the oldest structure and was originally commissioned by the emperor Ashoka the Great in the 3rd century BCE. Its nucleus was a hemispherical brick structure built over the relics of the Buddha. It was crowned by the chatra, a parasol-like structure symbolising high rank. A pillar of finely polished sandstone was also erected. The old stupa was later covered when it was expanded. The bottom part of the pillar still stands. The upper parts of the pillar are placed under a canopy nearby. The pillar has an Ashokan inscription (Schism Edict) and an inscription in the ornamental Sankha Lipi from the Gupta period.