The 20th prime minster was an accidental prime minister who barely stayed in the job for four months. How did he end up with the job, and why did he leave so quickly? Was it something to do with his nicknames: Goody, Prosperity and the Blubberer?

(10 of 10) After exploring the southern Caribbean, on his return to Hispaniola, what does Columbus find?

(9 of 10) How does Columbus describe the coast to the north of Venezuela?

Also known as Viscount Melbourne, this was Queen Victoria's first prime minister, who gave his name to an Australian city. Find out more about the man and his wife's infamous love affair with Lord Byron.

(8 of 10) On his third journey Columbus explores the gulf of Paria between Trinidad and Venezuela. When does he finally escape the gulf?

(7 of 10) Columbus is exploring the waters between Trinidad and today's Venezuela. What riches does he find here?

The tenth prime minister was an aristocrat whose time in office was dominated by scandal. Find out about the first divorced prime minister and his attitude to the fateful tea tax.

(6 of 10) In this episode, Las Casas, who wrote this document based on Columbus' journals, condemns Columbus' treatment of the people he met in the Caribbean. How was Columbus criticised by Las Casas?

(5 of 10) How does Columbus describe the waters of the Orinoco river?

The first wholly 19th century prime minister was Henry Addington. He was also the first to take office in the newly defined United Kingdom of Great Britain and Ireland, and the first middle class prime minister. Find out about this apparently unambitious, stopgap prime minister here.