A political union is a type of state which is composed of smaller
states. Unlike a
personal union, the individual states share a common government and the union is recognized internationally as a single political entity. A political union may also be called a legislative union.Examples include the
United Arab Emirates and the
United Kingdom; and former states like the
Soviet Union,
Serbia and Montenegro and the
United Kingdom of Libya.
Lord Durham was widely regarded as one of the most important thinkers in the history of the
British Empire's constitutional evolution. He articulated clearly the difference between a full legislative union and a
federation. In his
1839 Report, in discussing the proposed union of
Upper and Lower Canada, he says: Two kinds of union have been proposed – federal and legislative. By the first, the separate legislature of each province would be preserved in its present form and retain almost all its present attributes of internal legislation, the federal legislature exercising no power save in those matters which may have been expressly ceded to it by the constituent provinces. A legislative union would imply a complete incorporation of the provinces included in it under one legislature, exercising universal and sole legislative authority over all of them in exactly the same manner as the Parliament legislates alone for the whole of the British Isles.
See more at Wikipedia.org...