The Constitution is organized in ten parts () and an additional introduction (), as well as a preamble, several additional and interim provisions and a series of repeals, and it ends with a final provision. Part I refers to fundamental rights and duties, which receive special treatment and protection under Spanish law. Part II refers to the regulation of the Crown and lays out the King's role in the Spanish state. Part III elaborates on Spain's legislature, the Cortes Generales. Part IV refers to the Government of Spain, the executive power, and the Public Administration, which is managed by the executive. Part V refers to the relations between the Government and the Cortes Generales; as a parliamentary monarchy, the Prime Minister () is invested by the legislature and the Government is responsible before the legislature. Part VI refers to the organization of the judicial power, establishing that justice emanates from the people and is administered on behalf of the king by judges and magistrates who are independent, irrevocable, liable and subject to the rule of law only. Part VII refers to the principles that shall guide the economy and the finances of the Spanish state, subjecting all the wealth in the country to the general interest and recognizing public initiative in the economy, while also protecting private property in the framework of a market economy. It also establishes the Court of Accounts and the principles that shall guide the approval of the state budget. Part VIII refers to the "territorial organization of the State" and establishes a unitary state that is nevertheless heavily decentralized through delegation and transfer of powers. The result is a "de facto" federal model, with some differences from federal states. This is referred to as an autonomous state () or state of the autonomies (). Part IX refers to the Constitutional Court, which oversees the constitutionality of all laws and protects the fundamental rights enshrined in Part I. Finally, Part X refers to constitutional amendments, of which there have been only two since 1978 (in 1995 and 2011).