A switchback was used in mountainous territory to gain elevation. Basically, a train could run uphill in one direction through a switch and onto a stub ended track. The switch would be thrown and the train would then back up the next leg of the climb.
As the years went on, John F. Kennedy, a Democrat, served three terms (six years) in the House of Representatives, and in 1952 he was elected to the US Senate. Soon after being elected senator, John F. Kennedy, at 36 years of age, married 24 year-old Jacqueline Bouvier, a writer with the Washington Times-Herald. Unfortunately, early on in their marriage, Senator Kennedyâs back started to hurt again and he had two serious operations.
Harry S. Truman served the remainder of late-President Franklin D. Roosevelt's fourth term of office, from April 1945 until January 1949. He was elected President in 1948, and continued in office until 1953, when he was succeeded by President Dwight D. Eisenhower.arry S. Truman, the Vice president succeeded President Roosevelt to become the 33rd, and finished Roosevelt's term. In 1948 Harry S. Truman was reelected into office, and served as president from April 12, 1945 to January 20, 1953.