The Silk Road provided a way for Buddhist missionaries to travel east out of India into central Asia. Once the ruling family adopted Buddhism, it spread across China, into Korea and Japan and became a permanent part of Chinese culture.
Answer: These forms of Hinayana were later combined with Mahayana aspects that came through this same route from India, with the Mahayana eventually becoming the dominant form of Buddhism in China and most of Central Asia. The Chinese form of Mahayana later spread to Korea, Japan and Vietnam.
Truman pledged that the United States would help any nation resist communism in order to prevent its spread. His policy of containment is known as the Truman Doctrine.