The "Big Four" of Bulgaria's independence struggle were Georgi Rakovski (Subi S. Popovich), Vasil Levski (Vasil Ivanov Kunchev), Lyuben Karavelov, and Hristo Botev. Rakovski outlined the first plan for Bulgaria independence, but died before he could put his plan in action. Levski, Karavelov, and Botev formed the Bulgarian Revolutionary Central Committee, the first real independence organization, with a clear plan for revolution. But Levski was killed in 1873, and the committees inside Bulgaria broke down. A later dispute between Karavelov and Botev led to the end of the organisation.