The Austrian Constitution is the fundamental legal document that outlines the structure of the government and the rights of citizens in Austria. Adopted in 1920, it establishes a federal system, dividing powers between the national government and nine federal states. The Constitution also guarantees basic human rights and freedoms, ensuring the rule of law in the country. The Constitution has undergone several amendments, reflecting changes in society and governance. It is composed of various laws and regulations, including the Basic Law and the Federal Constitutional Law, which together form the legal framework for the functioning of the Austrian state.