October 24, 1885
On this day, Mahinland received the protection of Queen Victoria of the United Kingdom by treaty, becoming part of the British Empire.
Mahinland, was quite briefly a German Protectorate under Emperor Wilhelm I. Then, it used to be described as a marshland with little or no resources.
On January 29, 1885, Mahin was sold by the King of Mahin to a German subject, Herr G. L. Gaiser for 5 pieces of silk, 5 puncheons of rum, 100 cases of gin, £20 and an eagle-crested staff that read “König der Mahin. On the March 11, 1885, a Treaty was signed by the King of Mahin with the German Commissioner and Consul-General for the West Coast of Africa, Dr. Nachtigal, for extending a German Protectorate over Mahin and Mahin Beach, but it was not ratified by the German Emperor.
However, following the declaration at the Berlin Conference of February 26, 1885, a British Protectorate was on June 5, 1885, proclaimed over Nigeria from Lagos to the right bank of the Rio dey Rey. To give effect to the proclamation, there was the need for the British legal occupation of the Ilaje country contiguous with Lagos which already was a British colony. Thus, on October 24, 1885, at the Mahin town of Aboto, a Treaty of Friendship and Protection, whereby the Amapetu and his country, including the land called Atijere and all portions of his country bounded by the sea were taking under the gracious protection of the Queen. This was signed between Lieutenant Governor Brandford Griffith as envoy of Queen Victoria of England and the Amapetu of Mahin. On the same day, another Treaty was signed, for the cession of the Beach or Coast-line belonging to the Amapetu in which reference was made to the Deed of sale previously granted to Mr.G. I. Gaiser.