Complex sentence: Mr. D'Entremont had a prosperous life after returing to the United States and is still a much recognized in biological history today, for Brendan Prast his life was just as prosperous, if in different areas than D'Entremont.
Split into simpler sentences: Mr. D'Entremont had a prosperous life after returing to the United States and is still a much recognized in biological history today. For Brendan Prast his life was just as prosperous, if in different areas than D'Entremont.