ガンビア川
During the late 17th century and throughout the 18th century, the British Empire and the French Empire struggled continually for political and commercial supremacy in the regions of the Senegal River and the Gambia River. The British Empire occupied the Gambia when an expedition led by Augustus Keppel landed there following the Capture of Senegal in 1758. The 1783 First Treaty of Versailles gave Great Britain possession of the Gambia River, but the French retained a tiny enclave at Albreda on the river's north bank. This was finally ceded to the United Kingdom in 1856.