Yes, the Mongol Empire (1206 ~ 1635) is a great empire spanning Eurasia in history, an extension of the former Great Mongolia, and one of the largest empires and countries in the world in history. The largest territory of the Mongolian Empire is 33 million square kilometers (44 million square kilometers), with the Pacific Ocean in the east, Lake Baikal (the first Arctic Ocean) in the north, the Black Sea coast (Hungary at the peak) in the west and the South China Sea in the south. It accounts for 22% of the world's land area, more than one fifth, which is 1.5 times that of the Soviet Union in the 20th century and 1.9 times that of Russia today, covering the population of 1 100 million at that time.

Indeed, the British Empire refers to a great empire composed of the British mainland and its dominions, colonies, possessions, trusteeship and protectorates. It is the country with the largest territorial area and the largest colonial empire in the world in history. The empire reached its peak in the early19th century, with a population of about 400 million to 500 million, accounting for a quarter of the world population at that time. The territory is about 33.67 million square kilometers, accounting for a quarter of the world's total land area.

Personally, I think it is inappropriate for people to say that the British Empire is bigger than the Mongolian Empire. When counting the area of the British empire, it includes the area of colonies and protectorates, while when counting the area of the Mongolian empire, it does not include the vassal States at that time (countries that call themselves vassal States), except the British empire of colonies and protectorates (also equivalent to vassal States! Statistics show that the rest of the area is smaller than the Mongolian empire!