It has been argued that the first Census<span> was prompted by the publication of a book called Essay on the Principle of Population, which was written by Thomas Malthus in 1798. ... Using the </span>Census<span> to collect information for use in developing government policy has continued to this day.</span>
A. The US made the Gadsden Purchase.
The US never sold Texas. US won the war. Mexican cession was the US taking land.