Columbia subject headings:
Mexico--Foreign relations--1821-1861.
Mexico--Foreign relations--United States.
Texas--History--To 1846.
United States--Foreign relations--1815-1861.
United States--Foreign relations--Mexico.
United States--Territorial expansion.
Harvard subject headings:
Mexico--Foreign relations--1821-1861.
Mexico--Foreign relations--United States.
Texas--History--To 1846
United States--Foreign relations--1815-1861.
United States--Foreign relations--Mexico.
United States--Territorial expansion.
Princeton subject headings: