Scotland is one of the four countries which form The United Kingdom - England, Scotland, Wales and Northern Ireland. People from England are 'English', people from Wales are 'Welsh', people from Northern Ireland are 'Northern Irish', and those who live in Scotland are 'Scottish'. But all the people who live in the United Kingdom are called "British". 46 million people live in England, 5 million people live in Scotland, 2.8 million in Wales and 1.5 million in Northern Ireland. All Welsh, Scottish and Irish people speak English, but some of them speak their own language their as well, Scottish Gaelic, Irish Gaelic and Welsh. Scotland may be divided into three areas: the highlands in the north, the central lowlands, and the southern uplands.