Columbia subject headings:
Brazil--Boundaries--Uruguay.
Portugal. Treaties, etc. 1750 January 13.
Uruguay--Boundaries--Brazil.
Uruguay--History--To 1810.
Harvard subject headings:
Portugal. Treaties, etc. 1750 January 13.
Rio Grande do Sul (Brazil : State)--Boundaries--Uruguay.
Sete Povos das Missões Orientais do Uruguai (Brazil)--History.
Uruguay--Boundaries--Brazil--Rio Grande do Sul (State)
Uruguay--Boundaries--Brazil--Rio Grande do Sul.
Princeton subject headings: