The British empire had 1/3rd of the world's land surface at one point. Not any more :(
Roman Empire ruled most of the known land at the time.
Genghis Khan (Chinggis haan) conquered the most land in history.
The Roman empire.
Numerous treaties broke up the Ottoman Empire. The most famous and which stripped the empire of the most land was the Treaty of Versailles in 1919.
Romans
The British.
Why did The British Empire lose their land?
The Holy Roman Empire.
The British Empire claimed the most land in history, with territories and colonies in various parts of the world, including North America, Africa, Asia, and Oceania. At its peak, the British Empire covered almost a quarter of the Earth's total land area.
In the 13th century, the Mongol Empire was the biggest land empire.
The British empire got Briton a lot of land and without it we would have most probley lost WW1
The largest contiguous empire (the largest empire confined to a single land mass) was the Mongol Empire which, at its largest extent covered 33,000,000 sq km or 12,741,000 sq miles, some 22% of the earth's total land area. The Mongol Empire was the second largest empire after the British Empire which was a maritime empire and not confined to a single land mass. The British Empire was the largest empire in history. At it's peak the Brirish Empire covered 36.6 million km² of land and contained around a quarter of the worlds population. After World War II much of the British Empire territories declared independence. Most still retain a close relationship with Britain, some even choosing to retain the British Monarch.