The difference in income between the richest and poorest citizens is called

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!