Liverpool ( /ˈlɪvəpuːl/) is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880. According to the Office for National Statistics, the 2010 mid-year population estimate for Liverpool was 445,200 and was part of a larger urban area of 816,216.

Historically a part of Lancashire, the urbanisation and expansion of Liverpool were both largely brought about by the city's status as a major port. By the 18th century, trade from the West Indies, Ireland and mainland Europe coupled with close links with the Atlantic Slave Trade furthered the economic expansion of Liverpool. By the early 19th century, 40% of the world's trade passed through Liverpool's docks, contributing to Liverpool's rise as a major city.

Inhabitants of Liverpool are referred to as Liverpudlians but are also colloquially known as "Scousers", in reference to the local dish known as "scouse", a form of stew. The word "Scouse" has also become synonymous with the Liverpool accent and dialect. Liverpool's status as a port city has contributed to its diverse population, which, historically, were drawn from a wide range of peoples, cultures, and religions, particularly those from Ireland. The city is also home to the oldest Black African community in the country and the oldest Chinese community in Europe.

Dark horse is a term used to describe a little-known person or thing that emerges to prominence, especially in a competition of some sort or a contestant that seems unlikely to succeed.

The term began as horse racing parlance. A dark horse is a race horse that is not known to gamblers and thus is difficult to place betting odds on.

The earliest-known use of the phrase is in Benjamin Disraeli's novel The Young Duke (1831). Disraeli's protagonist, the Duke of St. James, attends a horse race with a surprise finish: "A dark horse which had never been thought of, and which the careless St. James had never even observed in the list, rushed past the grandstand in sweeping triumph."

The term has been used politically in such countries as Peru, Philippines and United States.

Politically, the term reached America in the nineteenth century when it was first applied to James K. Polk, a relatively unknown Tennessee Democrat who won the Democratic Party's 1844 presidential nomination over a host of better-known candidates. Polk won the nomination on the ninth ballot, and went on to win the presidential election.