Are you sure they also had such a plan? AFAIK, only El Salvador is planning to build something like that [I did a quick search on Google, but had no luck in finding any connection to CAR].
CryptoCity & Crypto Island in Bangui, Central African Republic’s capital
https://sango.org/#cryptoCitySectionOf course, it's going to be built on tokens that, well, are not selling! And what incentive you will have as an investor?
Citizenship in the Central African Republic can be obtained by locking a fixed collateral of SANGO Coins in the amount of 60000$ for a period of 5 years. After the period ends, the SANGO Coins are returned to the owner.
Future access to a global network of services in major industries like healthcare, insurance and fintech, accessible from anywhere in the world through Sango App
Useless citizenship, a promise of zero tax on gains that will never be there, and some more vaporware.
They can help bring in foreign investments, make international trade easier, and even inspire technological advances. And on top of that bring in more tourists...
And how would they do this? Wishful thinking!
Nobody is going to invest in one of the poorest countries in the world that are one step away from a civil war just because they've legalized crypto.
Where are the returns from your investment going to come? Poverty is quite cheap and there are a lot of exporters, I don't think you can get too much for it!