Asia

Asia was an Earth continent. It was home to animals including elephants, rhinoceroses, wild boars, giant pandas, monkeys, and tigers.

History
According to Barbara Wright, the Mongols conquered all of Asia under the rule of Kublai Khan. Indeed, in 1289, a vizier introduced the Khan as the "ruler of Asia, India, Cathay and other territories." While playing backgammon with the First Doctor, the Khan found himself owing half of Asia to him. (TV: Marco Polo)

During World War II, Japan's war aim was to unite Asia under the Asian Co-Prosperity Sphere. (PROSE: The Face of the Enemy) Their ambitions ultimately spread war throughout the continent, with attacks in China, Manchuria, (PROSE: The Shadow of Weng-Chiang, Log 384) the Philippines, (PROSE: Happily Ever After Is a High-Risk Strategy) Singapore, (AUDIO: The Forsaken, The Girl Who Never Was) Burma (PROSE: Just War, The Scales of Injustice) and other Pacific Islands before Japan surrendered in 1945. (PROSE: Endgame)

In the late 20th century, amidst growing tensions between Russia and China, fighting broke out in southern Asia and South America before Sir Reginald Styles was able to negotiate peace, cooling the crisis and preventing World War III, with the Third Doctor preventing an alternate timeline where Styles was assassinated and war did indeed come to pass. (TV: Day of the Daleks)

In the early 21st century, a Skullion ship crashed in central Asia on Earth and its crew were sold into slavery. (TV: The Man Who Never Was)

In 2015, North Asia was among the places where newly-hatched Zygons were settled across the world as part of Operation Double. (TV: The Zygon Invasion)

Following the plague sent by the Daleks during their 22nd century invasion of Earth, a majority of the population of Asia died before a cure was found. (TV: The Dalek Invasion of Earth) A human resistance movement was later formed in China against the occupation, but was crushed by the Daleks within days. (AUDIO: Masters of Earth)

At one point, Asia was home to one of the five ioniser bases keeping back the glaciers of the second Ice Age. (TV: The Ice Warriors)