(Bloomberg) -- More than two centuries of British control over the Chagos islands ... The UK won control of Mauritius in the 1810s and kept the same administrative arrangement.

PRESENTER:'So the British set out to create the demand ... ZHENG YANGWEN:If you search the 1790s, there's none. Then if you go to 1810s, maybe a few. 'Go to 1820s, there's a lot.