Glasgow (English //; Scots: Glesca; Scottish Gaelic: Glaschu) is the largest city in Scotland, the 3rd largest city in the United Kingdom, and, as of the 2011 census, the Scottish city with the highest population density with 3,395 people per square kilometre. It is situated on the River Clyde in the country's West Central Lowlands. Inhabitants of the city are referred to as Glaswegians.
Glasgow grew from a small rural settlement on the River Clyde to become one of the largest seaports in the world. Expanding from the medieval bishopric and royal burgh, and the later establishment of the University of Glasgow in the 15th century, it became a major centre of the Scottish Enlightenment in the 18th century. From the 18th century the city also grew as one of Great Britain's main hubs of transatlantic trade with North America and the West Indies.