Question

These were Indianized rivals of the Vietnamese who moved into the Mekong River delta region.

Answer 1

Answer:

Correct answer is Khmers.

Explanation:

Samurai is not correct answer as this were the members of Japanese military class, similar to European knights.

Bushi is also not correct answer as this is a synonym for samurai.

Shoguns were military leaders in Japan, so therefore this answer is also false.

Therefore D is the correct answer. Today most of the Khmers are living on Cambodia.