The "agreement" was issued by British Foreign Secretary, Lord Curzon, to the Persian government in August 1919.
After the 1917 Bolshevik Revolution, the new Soviet government abandoned the former Russian sphere of influence in the five northern provinces of Iran, branding the concept as "Tsarist Imperialism".
The document gave a guarantee of British access to all Iranian oil fields.
In return the British would: The document was criticized by foreign observers as hegemonic, especially in the United States, which also had designs on accessing Iranian oil fields.
Eventually, the Anglo-Persian Agreement was formally denounced by the Majlis on 22 June 1921.