Columbia subject headings:
Free trade--Great Britain--History.
Great Britain--Colonies--History.
Great Britain--Foreign economic relations.
Tariff--Great Britain--History.
Harvard subject headings:
Free trade--Great Britain--History.
Free trade.
Great Britain--Colonies--History.
Great Britain--Foreign economic relations.
Tariff--Great Britain--History.
Princeton subject headings:
Free trade--Great Britain--History.
Great Britain--Colonies--History.
Great Britain--Foreign economic relations.
Tariff--Great Britain--History.