Complex sentence: Due to the findings of documented remains throughout the island, some of which date back over 3000 years, it has been established that Barbados was previously inhabited thousands of years before its the re-discovery by Europeans.
Split into simpler sentences: Due to the findings of documented remains throughout the island, some of which dates back over 3000 years. It has been established that Barbados was previously inhabited thousands of years before its the re-discovery by Europeans.