Wales is a country that is part of the United Kingdom and the island of Great Britain. Over the last 250 years, Wales has been transformed first from a predominantly agricultural country to an industrial, and now a post-industrial economy. Since the Second World War, the service sector has come to account for the majority of jobs, a feature typifying most advanced economies. From the middle of the 19th century until the post-war era, the mining and export of coal was a dominant industry. At its peak of production in 1913, nearly 233,000 men and women were employed in the south Wales coalfield, mining 56 million tons of coal. From the mid-1970s, the Welsh economy faced massive restructuring with large numbers of jobs in traditional heavy industry disappearing and being replaced eventually b