Columbia subject headings:
Harvard subject headings:
Mexican War, 1846-1848--Influence.
Texas--Annexation to the United States
Texas--History--Revolution, 1835-1836--Influence.
United States--Territorial expansion.
Princeton subject headings:
Mexican War, 1846-1848.
Mexico--History--19th century.
Texas--History--1846-1950.
Texas--History--To 1846.