Complex sentence: Earl Grant Harrison (1899-1955) was an American attorney, academician, and public servant who is noted for his contribution for displaced persons after World War II, where he highlighted the plight of Jewish refugees in a crucial report to President Harry S. Truman.
Split into simpler sentences: Earl Grant Harrison (1899-1955) was an American attorney, academician, and public servant. He is chiefly remembered for his work on behalf of displaced persons in the aftermath of the Second World War, when he brought attention to the plight of Jewish refugees in a crucial report to President Harry S. Truman.