Columbia subject headings:
Slavery--Brazil.
Harvard subject headings:
Slavery--Brazil--History
Slaves--Emancipation--Brazil
Princeton subject headings:
Antislavery movements--Brazil--History--19th century.
Brazil--Ethnic relations--History--19th century.
Brazil--Foreign relations--Great Britain--History--19th century.
Slave trade--Brazil--History--19th century.
Slavery--Brazil--History--19th century.