Twenty years ago, the economy of Mauritius was still based on the sugar industry, mainly exporting to Britain under the terms of the Lomé convention.
There was also a significant textile industry, with exports to the EU and the USA, and a tourism industry.
Then the sugar oligarchy shifted its focus to finance. From 21 sugar factories, Mauritius is down to four (more mechanised) factories. The sugar cane is still there, but the sugar capitalists have shifted to Africa.