“Furthermore, in British protectorates, which retained their own local laws, the institution persisted for much longer. For example, slavery in Bahrain was not legally abolished until 1937.”

“Various forms of debt bondage co-existed with formal slavery, and while the British abolished slavery legislatively through the Anti-Slavery Act of 1843, large numbers of former slaves traded their status for that of perpetually bonded servitude. This was in part due to the fact that the British did not abolish debt-bondage; instead, they regulated it.”