Which of the following sentences from the passage expresses a historical interpretation rather than states a historical fact?
1) In a 1963 address, Lyndon Johnson asked Americans to join him in a "war on poverty."
2) From the outset, Johnson's call to arms met considerable skepticism.
3) One Gallup poll found that 83 percent of respondents doubted that poverty could actually be abolished.
4) But these were peak years of what publisher Henry Luce called the "American Century," a time when people felt good about themselves and were willing to try anything.