Complex sentence: Donald Harman Akenson (born May 22,1941, Minneapolis, Minnesota) is a historian and author, widely acknowledged as the world's foremost expert in the history of Irish worldwide diaspora.
Split into simpler sentences: Donald Harman Akenson (born May 22,1941, Minneapolis, Minnesota) is a historian and author. He is widely acknowledged as the world's foremost expert in the history of Irish worldwide diaspora.