Conakry was originally settled on the small Tombo Island and later spread to the neighboring Kaloum Peninsula, a  stretch of land  wide. The city was essentially founded after Britain ceded the island to France in 1887. In 1885 the two island villages of Conakry and Boubinet had fewer than 500 inhabitants. Conakry became the capital of French Guinea in 1904 and prospered as an export port, particularly after a railway (now closed) to Kankan opened up the interior of the country for the large-scale export of groundnut.