Original: The proposed autonomy for Corsica would have included greater protection for the Corsican language (Corsu), the island's traditional language (which is similar to Italian), whose practice and teaching, like other regional or minority languages in France, had in the past been discouraged.
Simplified: The propose of autonomy for Corsica would have included greater protection for the Corsican language (Corsu), the island's traditional language (which is also considered to be a dialect of Italian).