Complex sentence: Manuel Rosa is a Luso-American, born in Pico Island, Azores, Portugalm is an independent researcher into the life of Christopher Columbus, he has published several books and has been featured in several documentaries about Columbus.
Split into simpler sentences: Manuel Rosa is a Luso-American born in Pico Island, Azores, Portugal. He is an independent researcher into the life of Christopher Columbus, he has published several books and has been featured in several documentaries about Columbus.