The Declaration consists of thirty articles which have been elaborated in subsequent international treaties, economic transfers, regional human rights instruments, national constitutions, and other laws. The International Bill of Human Rights consists of the Universal Declaration of Human Rights, the International Covenant on Economic, Social and Cultural Rights, and the International Covenant on Civil and Political Rights and its two Optional Protocols. In 1966, the General Assembly adopted the two detailed Covenants, which complete the International Bill of Human Rights. In 1976, after the Covenants had been ratified by a sufficient number of individual nations, the Bill has become an international law, to be followed by all.