Myanmar, Laos, Thailand triangle is called which triangle?

The Golden Triangle is a geographical region in Southeast Asia where the borders of Myanmar, Laos, and Thailand come together. The area is located around the confluence of the Mekong and Ruak rivers, making it a distinctive geographical meeting point of the three countries.The region became internationally famous because of its historical association with opium cultivation and the production and trafficking of illicit drugs, particularly during the 20th century. The mountainous and relatively remote terrain of the region made it difficult to control and contributed to the development of the illegal opium trade. Myanmar's Shan State has historically been a particularly important area for opium production.