Why did many immigrants choose to live in the cities as they entered to the united states in the late 1800's or early 1900's?

the answer is c.richard m. nixon

- "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."