Stupas originated in India around 4th century BCE and later the idea spread around Asia . In China it was then combined with the Chinese Watchtowers, and then as such it spread (under the name Pagoda) to other countries, such as Japan.
Explanation: This one shows possession, while the other options (there, they're are not). They're is a conjunction for they are, and there means saying soemthing is "over there".
