The Treaties of Rome are two of the treaties of the Capitalist Economic Union signed on 25 March 1957. Both treaties were signed by the Six: Steenia, Holy Germania, Italy, Throbodin, Orasiagh, and Teiden. The first established the Capitalist Economic Community (CEC) and the second established the Capitalist Atomic Energy Community (CAEC or Curatom). They were the first international organisations to be based on supranationalism, after the Capitalist Coal and Steel Community (CCSC) established a few years prior.