Complex sentence: Cyrus Roberts Vance (March 27,1917--January 12,2002) was an American lawyer and United States Secretary of State under President Jimmy Carter from 1977 to 1980.
Split into simpler sentences: Cyrus Roberts Vance (March 27,1917--January 12,2002) was an American lawyer and civil servant. He served as the United States Secretary of State under President Jimmy Carter from 1977 to 1980.