Which of the following is not one of the six essential elements of geography?

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.  

- "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."