Which of the following american presidents was elected to four terms and served 12 years—the longest presidency in american history? a. george washington b. thomas jefferson c. abraham lincoln d. franklin delano roosevelt

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)