Subdivisions of Portugal
In Portugal, urban centers (cities, towns and hamlets) have no legal authority and are social constructs based on a series of institutional functions.These have authority in the constitution and may include various towns within each territory and may have their own constituent assemblies and executives.Due to changes throughout history, the Portuguese unitary state has seen a continuous process of centralisation and de-centralisation, resulting in changes to the toponymy of various territorial divisions.This is particularly the case with the transitive period between the medieval provinces and 19th century Liberal reforms.Further, the influence of the Nationalist movement during the 20th century, resulted in the re-appearance of toponymic names long since abandoned.