Freedonia (planet)

Freedonia was a planet Jo Grant once visited with the Third Doctor. Its atmosphere was similar to Earth's. The Doctor had at some point helped Kamoa bring about a political revolution, and was later present when a power-mad Kamoa was eventually deposed. (DWAN: After the Revolution) At some point in its history, the planet was one of many that provided troops to Morbius for use in his war against the Alliance. (PDA: Warmonger)

The Doctor and Freedonia
At some point prior to Jo Grant's resignation from UNIT, and during one of his first three incarnations, the Doctor visited Freedonia for the first time. During this trip, he helped a local leader called Kamoa with his political revolution.

When he next visited, this time with Jo, he discovered that Kamoa had transferred his essence into an electronic brain, and was sharing his natural brain cells with many robots that he had constructed. These robots, in turn, were suppressing the remaining biological Freedonians. ONe of these robots, Bolgar, became truly self aware, thanks to the fact that Jo managed to ask him questions that made him reconsider the logic of his role in Kamoa's plan. Bolgar then turned on his master, disconnected Kamoa, and thereby ended the "lives" of all the "Kamoan robots".

The people of Freedonia were thus set free, and the Doctor and Jo left them to get on with rebuilding their society. (DWAN: After the Revolution)

As fictional concept
The Doctor once claimed to William Shakespeare that Martha Jones was a citizen of the nation of "Freedonia", perhaps drawing inspiration for the name from this planet. (DW: The Shakespeare Code)

While visiting the Lake District in September 1909, Martha would once again claim to be from Freedonia. (NSA: Sting of the Zygons)

Behind the scenes
"Freedonia" is a generic name for a plausible-sounding but fictional country, popularised by the Marx Brothers film Duck Soup. Its use in The Shakespeare Code was intended as a reference to Duck Soup. (REF: Doctor Who: The Encyclopedia)