the former Spanish possessions in the Western Hemisphere, at one time including South America (except Brazil), Central America, Mexico, the West Indies, Florida, and most of the land in the U.S. west of the Mississippi River.
A former Spanish viceroyalty (1521-1821) in North America, including the southwest United States, Mexico, Central America north of Panama, and some West Indian islands. It also included the islands of the Philippines.
The former Spanish possessions in the New World. At its greatest extent, New Spain comprised South America (except Brazil), Central America, Mexico, the West Indies, Florida, and much of the land west of the Mississippi River.
