A zone is a group or currency area centered on the pound and controlled by the United Kingdom.
Its predecessor was the British Pound Group formed in September 1931, and it was formally established with the enactment of British regulations in 1939.
Sterling r area A monetary group of countries led by the United Kingdom and centered on the pound.
The participating countries and regions are mainly Commonwealth countries and countries and regions with close ties with the UK, including British overseas colonies, “protectorate”, “protection territories” and trust areas.
The establishment of sterling zone was a means for Britain to maintain its sphere of influence, strengthen the control and plunder of its colonies and countries in the zone, and prevent the infiltration of countries outside the zone.