What is Federation?
A '''federation''' is a union of a number of self-governing [[state]]s or regions, which are joined together under a central government. The central government is not able to do a lot of things that central government in more centralized states can. These things are done by the states (or regions) in a federalized state. The [[United States of America]] is a federation. The federal (central) government has the highest executive role. However, state governments can exercise any powers as long as those powers are not assigned to the federal government (by the [[United States Constitution]]) and if those powers are not prohibited by the states themselves. [[Australia]] became a Federation in 1901. After the 1971 [[civil war]], [[Pakistan]] became a Federation adopted in the [[1973 Constitution of Pakistan]]. Other examples of federal states are [[Austria]], [[Belgium]] (since 1993), [[Canada]], [[Germany]], [[Russia]] and [[Switzerland]]. ==Argentina== [[File:ViñedoCafayate.jpg|thumb|Salta]] Argentina is divided into 23 [[province]]s (''provincias''; singular: ''provincia''), and 1 city (commonly known as ''capital federal''): {| | # [[Buenos Aires|Ciudad Autónoma de Buenos Aires]]<sup>*</sup> # [[Buenos Aires Province|Buenos Aires (Province)]] # [[Catamarca Province|Catamarca]] # [[Chaco Province|Chaco]] # [[Chubut Province|Chubut]] # [[Córdoba Province, Argentina|Córdoba]] # [[Corrientes Province|Corrientes]] # [[Entre Ríos Province|Entre Ríos]] # [[Formosa Province|Formosa]] # [[Jujuy Province|Jujuy]] # [[La Pampa Province|La Pampa]] # [[La Rioja Province (Argentina)|La Rioja]] | <ol start=13> <li> [[Mendoza Province|Mendoza]] </li> <li> [[Misiones Province|Misiones]] </li> <li> [[Neuquén Province|Neuquén]] </li> <li> [[Río Negro Province|Río Negro]] </li> <li> [[Salta Province|Salta]] </li> <li> [[San Juan Province (Argentina)|San Juan]] </li> <li> [[San Luis Province|San Luis]] </li> <li> [[Santa Cruz Province (Argentina)|Santa Cruz]] </li> <li> [[Santa Fe Province|Santa Fe]] </li> <li> [[Santiago del Es