court system was established with four levels of jurisdiction: Base, District, Provincial, and National (Supreme Court). The Supreme Court was given appellate jurisdiction over four distinct areas of law: civil/administrative, criminal, state security, and military. The reforms of 1973 also saw the end of private legal practice, and all lawyers who continued to provide legal services were required to join legal collectives, known as bufetes colectivos. Also included in the reforms was the creation of "lay judges," who served on the bench alongside professional judges and kept alive the popular spirit of the People's Courts. These reforms were criticized on the basis that many judges appointed to serve on these courts were incompetent and that the courts were not administered well. Constitution of 1976 and socialist legality In 1976, Cuba formally institutionalized the revolution with the adoption of a new Constitution, which provided the legal system be based on the principle of socialist legality. In constructing their legal system, Cuba looked to the countries of the Socialist Bloc for blueprints. The principle of socialist legality, as articulated by Cuban jurists, puts forth that the role of the law in a socialist society is to create social stability while simultaneously furthering the development of the socialist society through change in Cuban political culture. As a guiding principle, socialist legality is explicitly transformative—its stated purpose is to transform society. This transformative principle penetrates to the heart of the law and has guided the development of Cuban Law since the mid-1970s. The explicit transformative principle of socialist legality sets it apart from the civil law and the common law legal systems, whose underlying principles are based on existing statute and custom, respectively. Subsequent reforms Successive reforms were instituted throughout the next 30 years to increase the autonomy of bufetes colectivos and the courts, adapt the courts to changing circumstances in Cuba, and to remedy other administrative problems that plagued the legal system. Recent legal history (late 1980s–present) Collapse of the Eastern Bloc In the late 1980s, with the downfall of the Soviet Union, starting with the pulling down of the Berlin wall in 1989 and its full collapse in 1991, the laws of Cuba changed again to respond to the new conditions of the Special Period. The Constitutional amendments of 1992 recognized forms of non-socialist property (joint ventures, corporations, other economic associations) and provided for non-discrimination based on religious belief (for example, persons