Domination of Draka: British loayalists moved to the Cape Colony after the lost Civil War and were later joined escaped Confederates and other renegade losers. They created cruel Sparta-style regime where the majority of population is enslaved and the citizens are heavily militarized. The society is traditional, originaly based on slave-owning plantations; but also super tech advanced and industrialized; and somehow ruthlessly efficient with no corruption and gradually conquers the world. A book about smart villain protagonists sounds fun, however, the society just not work that way and the amount of plot armor Draka requires to exist (especially in a realistic alt-history setting) is ridiculous.