Answer:
Buddhism was India's dominant religion in 100 BCE and then it expanded to become the dominant religion in all of Asia.
Step-by-step explanation:
Buddhism is a religion as well as a philosophy of life, and is underpinned by the messages left by Siddhartha Gautama, also known as Sakyamuni - sage of the Sakya clan - the Buddha portrayed by history, which existed between 563 and 483 BC in Nepal. Buddha did not want to convert anyone, but to enlighten people with his teachings, fruits of his own experience. In this religion, knowledge, wisdom and intellect have a great prominence and their followers acquire, with practice, the longed for inner peace.
In 2,500 years Buddhism became the dominant religion in India, soon after expanded into Asia, Central Asia, Tibet, Sri Lanka, Southeast Asia, as well as China, Myanmar, Korea, Vietnam and Japan. Today this philosophy is found in any part of the planet. Its main lessons are not to do evil, to cultivate good and one's mind, in order to attain Nirvana, the superior reality that everyone longs to attain, in which one attains the end of the cycle of suffering, that is, samsara.