Alexander O'Riordan - The Southern African Customs Union (SACU) is most easily identifiable in Botswana’s, Lesotho’s, Namibia’s and Swaziland’s (BLNS) use of the South African Rand as the basis for their own currencies, albeit through printing their own versions of the rand. The monetary union is now over a century old and the longest standing currency union in the world. By a quirk of apartheid history, the customs union also makes South Africa probably the most generous donor in the...