What laid the basis for Indo-Mauritians population (majority of extant population) largely emigrated to there subsequent to the abolition of slavery. Over simplification of what were undoubtable moral affronts doesn't help a rational view of history.
Franco-Mauritians still indeed exist in small but wealthy numbers.
> Making a claim that all Europeans have a better claim to Mauritius than the people and the descendants of the people who lived there
I'm saying in linear time they indeed have an earlier claim. I say it because the term in relation to the relocated people of Chagos is often that they are "indigenous". Which isn't true