historic county of the United Kingdom
Monmouthshire , also known as the County of Monmouth (; Welsh: Sir Fynwy), is one of thirteen historic counties of Wales and a former administrative county. It corresponds approximately to the present principal areas of Monmouthshire, Blaenau Gwent, Newport and Torfaen, and those parts of Caerphilly and Cardiff east of the Rhymney River.
The eastern part of the county is mainly agricultural, while the western valleys had rich mineral resources. This led to the area becoming highly industrialised with coal mining and iron working being major employers from the 18th century to the late 20th century. The largest five towns are Newport, Cwmbran, Pontypool, Ebbw Vale and Abergavenny.
Monmouthshire's Welsh status was ambiguous between the 16th and 20th centuries, with it considered by some to be part of England during this time; its legal inclusion in Wales was clarified by the Local Government Act 1972, the same act that changed the structure of local government within the county.
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