Complex sentence: Galbraith was active in Democratic Party politics, serving in the administrations of Franklin D. Roosevelt, Harry S. Truman, John F. Kennedy and Lyndon B. Johnson; he served as United States Ambassador to India under the Kennedy administration.
Split into simpler sentences: Galbraith was active in Democratic Party politics, serving in the administrations of Franklin D. Roosevelt, Harry S. Truman, John F. Kennedy, and Lyndon B. Johnson. He served as United States Ambassador to India under the Kennedy administration.