The three scenarios, all having to with pre-20th century Vietnam, are as follows:
1) The Dutch colonize Vietnam and rule some or all of it as tightly as they ruled Java
2) The independent Vietnamese empire discovers or conquers some overseas territory (the water distance can be short or long)
3) What are the most likely 21st century boundaries of any sovereign Thai, Vietnamese, Khmer or Lao states in a scenario with the PoD that no Europeans ever colonize Indochina [as they did in OTL, pre-1900], even though Europeans colonize other places around the globe? What would be the most likely demographic boundaries of Thai, Vietnamese, Khmer and Lao speaking people in said scenario?
1) The Dutch colonize Vietnam and rule some or all of it as tightly as they ruled Java
2) The independent Vietnamese empire discovers or conquers some overseas territory (the water distance can be short or long)
3) What are the most likely 21st century boundaries of any sovereign Thai, Vietnamese, Khmer or Lao states in a scenario with the PoD that no Europeans ever colonize Indochina [as they did in OTL, pre-1900], even though Europeans colonize other places around the globe? What would be the most likely demographic boundaries of Thai, Vietnamese, Khmer and Lao speaking people in said scenario?