Based on the map, name the land that the United States acquired or re-acquired to build its current territory. This includes land sold to the United States from foreign nations and land annexed from other countries, including countries that separated from the US itself. Some land was annexed before the annexation was recognized. In these circumstances, the treaty supersedes the annexation.
Excluding any land lost/ceded to another country
Excluding smaller territories (Guam, American Samoa, Palmyra Atoll, etc.)
Name the territory name or purchase/treaty name (if there are multiple territories in a single treaty, name any)
All land acquired in a single treaty is listed as a single answer, with two exceptions