用简短的英语描述英国不要长,30～40词即可,

A country of western Europe comprising England, Scotland, Wales, and Northern Ireland. Beginning with the kingdom of England, it was created by three acts of union: with Wales (1536), Scotland (1707), and Northern Ireland (1800). At the height of its power in the 19th century it ruled an empire that spanned the globe. London is the capital and the largest city. Population, 55,648,994.