Three countries in Southeast Asia which Buddhism is the main religion today?

The following three countries in Southeast Asia have Buddhism as the dominant religion:

Thailand: Over 90% of the population of Thailand follows Theravada Buddhism, making it the country's official and prevalent religious belief.

Cambodia: Buddhism is the principal religion practiced by the majority of Cambodians, primarily following the Theravada tradition. Cambodia's Buddhist culture is deeply rooted in its history, and the country is known for its awe-inspiring temples, including Angkor Wat.

Laos: Theravada Buddhism is also the dominant religion in Laos, practiced by over half of the population. It plays a vital role in shaping Lao culture, traditions, and festivals, with monasteries serving as important religious and educational centers.