Cultural diffusion
Stupas and Pagodas are Buddhist holy buildings.
First in Northern India, then it spread to China and southeast Asia. In some of the countries that it spread to it was adapted to local customs (mostly rituals), but the teachings are the same regardless of the local adaptations.
The last edit was super wrong. The answer is Theravada and Mahayana. Those were the two Buddhist groups that spread Buddah's ideas to Southeast Asia. Then, Buddah's idea was adopted in Ceylon and Sri Lanka. They are described as cities, not as the name of the groups that spread Siddharta's idea. That answer from the last person? He or she needs help.
Buddhism reached Japan in the 6th century CE through Korean and Chinese influences. Factors contributing to its spread and establishment in Japan include the support of the ruling elite, the appeal of Buddhist teachings to the common people, and the integration of Buddhist practices with indigenous beliefs and customs.
Prince Shotoku helped spread Buddhism in Japan by building a grand Buddhist temple and by writing commentaries on Buddhist teachings.
Islam spread to the island of southeast Asia through traders and merchants. Many of the city states in Malaysia and west Indonesia had a strong maritime trading orientation and as a result, accommodated many Muslim merchants from Arabia, India, and the East African coast. As a result, the ideas of Islam became incorporated in those areas, supplanting the previous Buddhism. In the rest of Southeast Asia, such as Thailand, Cambodia, Laos, Burma, and Vietnam, the orientation was much more inland and river-based trade, meaning that Islam did not have the same inroads and access.
Prince Shotoku helped spread Buddhism in Japan by building a grand Buddhist temple and by writing commentaries on Buddhist teachings.
Conversion of merchants was the strategy used by Buddhist and Christian missionaries employ to spread their faith.
Throughout southeast Asia.
The Amaravati school of thought refers to the style of Buddhist art that flourished in the region of Amaravati in present-day Andhra Pradesh, India, during the Satavahana dynasty. Known for its intricate stone carvings of Buddha and various Buddhist deities, the Amaravati school contributed to the development of Buddhist art in India. Its influence spread to other parts of Southeast Asia, shaping the artistic expression of various Buddhist cultures.
Hinduiasm
it spread throughout southeast and south asia