Conversation so far:
What is the Mekong Delta?
The Mekong Delta is the region in southwestern Vietnam where the Mekong River approaches and empties into the sea through a network of distributaries.
What did the Khmer Krom do at the Mekong Delta?
In the 17th century a weakened Khmer state left the Mekong Delta poorly administered after repeated warfare with Siam.
When did Vietnam absorb provinces?
By 1757 the Vietnamese had absorbed the provinces of Psar Dèk on the Mekong Delta.
Were there other provinces Vietnam absored besides the Psar Dek?
The Vietnamese also absurd Moat Chrouk on the Bassac River.
What else is significant about Khmer Krom and the Mekong Delta besides absorbing provinces?
Minh Mạng enacted assimilation policies upon the Khmer such as forcing them to adopt Sino-Vietnamese surnames, culture, and clothing.
What was the impact of Minh Mang enacting assimilation policies upon the Khmer Krom?
Minh Mang sinicized ethnic minorities including the Cambodians, in line with Confucianism as he diffused Vietnamese culture with China's Han civilization using the term Han people 漢人 for the Vietnamese.

Question: What else is significant about this event?
Self-contained rewrite: What else is significant about Minh Mang enacting assimilation policies upon the Khmer Krom besides sinicizing ethnic minorities?