2Japan adopted Chinese customs outright, but Korea adopted customs to fit its needs.
3Japan invited collaboration with China, while Korea was conquered by China.
4Japan adapted Chinese customs to fit their needs, while Korea adopted the customs outright.
Answer: Japan invited collaboration with China, while Korea was conquered by China.
Explanation:
Japan, China, and Korea had a long history of frequent conflict.
However, the Chinese-Japanese friendly contact started through trade, and eventually, the Chinese influence over Japan grew because the Japanese imperials adopted many Chinese customs. Very different is the case of Korea, which was conquered by China before having their influence spread on their customs.
Japan invited collaboration with China, while Korea was conquered by China.