Maybe Haiti the Dominican Republic should be a single country
You haven't presented yourself a single argument as to why would the Dominican Republic want to do that at first place, how would that benefit them exactly?
Only Haiti stands to benefit from any "unification". And more importantly, the Dominicans should be the only ones to determine their destiny; not academics who think "improving economic status" is a valid reason for merging one country with another -- without any regard for the preservation of culture, ethnic makeup of the country, history, national identity -- and most importantly: values.
https://www.theatlantic.com/ideas/archive/2018/11/dominican-...
Why would the neighbor which is also poor take on that burden? The USA are wealthy, maybe they should annex Haiti instead.
Haiti is less a country and more corruption as an enterprise, on the back of robbing farmers who own very small plots of destroyed soil.
USA are incredibly more wealthy than DR.
https://www.worldometers.info/gdp/gdp-by-country/
Haiti speaks french, not Spanish.
As I asked in the comment you answered to, you didn't explain why would the DR want to have anything to do with Haiti since they are successful on their own as you claim. What does the DR gains from merging with Haiti, one of the poorest country in the world?
Then what's the point of your comment at first place then? if you were just trying to argue that DR isn't "poor", poverty is obliviously relative, there are poorer countries (Haiti) and there are far richer countries (USA). It's seems like that's the only purpose of your message.