[The Conversation Africa] A new book called Bottled: How Coca-Cola Became African tells the story of how the world's most famous carbonated drink conquered the continent. It's a tale of marketing gumption and high politics and is the product of years of research by critical writing lecturer Sara Byala, who researches histories of heritage, sustainability and the ways in which capitalist systems intersect with social and cultural forces in Africa. We asked her some questions about the book.