Television in Scotland 4, and Channel 5, whose broadcast coverage is more limited, and in very remote areas difficult or impossible to receive. Scotland has its own BBC Scotland services, BBC One Scotland and BBC Two Scotland, which commenced broadcasting on 14 March 1952 and 20 April 1964 respectively. Much of the output of BBC Scotland Television, such as news and current affairs programmes, and the Glasgow-based soap opera, "River City", are intended for broadcast within Scotland, whilst others, such as drama and comedy programmes, aim at audiences throughout the UK and further afield. Sports coverage also differs, reflecting the fact that the
Economy of Scotland in the Middle Ages written sources from which to re-construct the demography of Medieval Scotland. Estimates have been for the early period made of a population of 10,000 inhabitants in Dál Riata and 80–100,000 for Pictland, which was probably the largest region. From the formation of the Kingdom of Alba in the tenth century, to before the Black Death reached the country in 1349, estimates based on the amount of farmable land, suggest that population may have grown from half a million to a million. Although there is no reliable documentation on the impact of the plague, if the pattern followed that in England,