After completing this chapter, the student will be able to:

1. Describe the population's age structure related to its stage of economic development.
2. Explain relative life expectancy of men versus women, and how it is related to the sex ratio.
3. Describe how fertility, mortality, and migration rates in the U.S. changed over the past century, and explain the effect of these changes on the nation’s population.
4. Assess how life expectancy in the United States changed over the past century, and explain whether and how it varies from one group to the next.