it spread throughout southeast and south asia
Buddhism
It was gautam buddha who spread buddhism throughou asia not any country.and he was born in nepal.
Southeast Asia (Apex)
Stupas
Throughout southeast Asia.
Buddhism first spread throughout India. Then it spread into China. As it spread into China it spread into Sri Lanka and then to Southeast Asia. From China it spread into Tibet, Korea and Japan. As of now Buddhism is practiced in all of the continents except Antarctica, (unless of course a Buddhist happens to be visiting). Buddhism is most prevalent in Asia and least prevalent in Africa. Buddhism is the fastest growing religion in Europe and North America. So Buddhists now are everywhere
India.
It's Thailand with 95% of Buddhist populations.
Which country? Buddhism is over 2,500 years old and has spread to all continents over that time.
Buddhism.
Stupas and Pagodas are Buddhist holy buildings.