Orange River Convention
1854 CE.
Shown on the map at -29.100°, 26.220°.
The Orange River Convention (sometimes also called the Bloemfontein Convention; Afrikaans: Bloemfontein-konvensie) was a convention whereby the British formally recognised the independence of the Boers in the area between the Orange and Vaal rivers, which had previously been known as the Orange River Sovereignty. This resulted in the formation of the independent Boer Republic of the Orange Free State (OFS).
Text from the Wikipedia article Orange River Convention, licensed CC BY-SA 4.0.