|Area||55,000,000 km2 (21,000,000 sq mi)|
|Population||5.4 billion (As of 2023)  |
|Population density||93/km2 (240/sq mi)|
|Countries||~ 93 countries|
|Time zones||UTC−1 to UTC+12|
Eurasia ( //, also UK: /-/) is the largest continental area on Earth, comprising all of Europe and Asia.   According to some geographers, physiographically, Eurasia is a single continent.  The concepts of Europe and Asia as distinct continents date back to antiquity, but their borders are arbitrary and have historically been subject to change. Eurasia is connected to Africa at the Suez Canal, and the two are sometimes combined to describe the largest contiguous landmass on Earth, Afro-Eurasia. 
Primarily in the Northern and Eastern Hemispheres, Eurasia spans from Iceland and the Iberian Peninsula in the west to the Russian Far East, and from the Russian Far North to Maritime Southeast Asia in the south. Eurasia is bordered by Africa to the southwest, the Atlantic Ocean to the west, the Arctic Ocean to the north, the Pacific Ocean to the east, and the Indian Ocean to the south. The division between Europe and Asia as two continents is a historical social construct, as neither fits the usual definition; thus, in some parts of the world, Eurasia is recognized as the largest of the six, five, or four continents on Earth. 
Eurasia covers around 55 million square kilometres (21 million square miles), or around 36.2% of the Earth's total land area. The landmass contains well over 5 billion people, equating to approximately 70% of the human population. Humans first settled in Eurasia from Africa 125,000 years ago.
Due to its vast size and differences in latitude, Eurasia exhibits all types of climates under the Köppen classification, including the harshest types of hot and cold temperatures, high and low precipitation, and various types of ecosystems.
In geology, Eurasia is often considered as a single rigid megablock, but this is debated.   Eurasia formed between 375 and 325 million years ago with the merging of Siberia, Kazakhstania, and Baltica, which was joined to Laurentia (now North America), to form Euramerica.
This is a list of the longest rivers in Eurasia. Included are all rivers over 3,000 km (1,900 mi).
|1||Yangtze (Cháng Jiāng 长江) ||China||6,300||3,915|
|2||Yellow River (Huáng Hé 黄河) ||China||5,464||3,395|
|3||Mekong ||China, Myanmar, Laos, Thailand, Cambodia, Vietnam||4,909||3,050|
|4||Lena (Лена) ||Russia||4,294||2,668|
|5||Irtysh (Иртыш) ||Mongolia, China, Kazakhstan, Russia||4,248||2,640|
|6||Brahmaputra (ब्रह्मपुत्र) ||China, India, Bangladesh||3,969||2,466|
|7||Ob (Обь) ||Russia||3,700||2,299|
|9||Yenisey (Енисей) ||Mongolia, Russia||3,487||2,167|
|10||Indus (सिन्धु/Síndhu/سندھ/سند/سنڌوءَ) ||China, India, Pakistan||3,150||1,957|
All of the 100 highest mountains on Earth are in Eurasia, in the Himalaya, Karakoram, Hindu Kush, Pamir, Hengduan, and Tian Shan mountain ranges, and all peaks above 7,000 metres are in these ranges and the Transhimalaya. Other high ranges include the Kunlun, Hindu Raj, and Caucasus Mountains. The Alpide belt stretches 15,000 km across southern Eurasia, from Java in Maritime Southeast Asia to the Iberian Peninsula in Western Europe, including the ranges of the Himalayas, Karakoram, Hindu Kush, Alborz, Caucasus, and the Alps. Long ranges outside the Alpide Belt include the East Siberian, Altai, Scandinavian, Qinling, Western Ghats, Vindhya, Byrranga, and Annamite Ranges.
The largest Eurasian islands by area are Borneo, Sumatra, Honshu, Great Britain, Sulawesi, Java, Luzon, Iceland, Mindanao, Ireland, Hokkaido, Sakhalin, and Sri Lanka. The five most-populated islands in the world are Java, Honshu, Great Britain, Luzon, and Sumatra. Other Eurasian islands with large populations include Mindanao, Taiwan, Salsette, Borneo, Sri Lanka, Sulawesi, Kyushu, and Hainan.
Eurasia has been the host of many ancient civilizations, including those based in Mesopotamia, the Indus Valley and China. In the Axial Age (mid- first millennium BCE), a continuous belt of civilizations stretched through the Eurasian subtropical zone from the Atlantic to the Pacific. This belt became the mainstream of world history for two millennia.
Originally, "Eurasia" is a geographical notion: in this sense, it is simply the biggest continent; the combined landmass of Europe and Asia. However, geopolitically, the word has several meanings, reflecting specific geopolitical interests.  "Eurasia" is one of the most important geopolitical concepts and it figures prominently in the commentaries on the ideas of Halford Mackinder. As Zbigniew Brzezinski observed on Eurasia:
"... how America 'manages' Eurasia is critical. A power that dominates 'Eurasia' would control two of the world’s three most advanced and economically productive regions. A mere glance at the map also suggests that control over 'Eurasia' would almost automatically entail Africa's subordination, rendering the Western Hemisphere and Oceania geopolitically peripheral to the world’s central continent. About 75 per cent of the world's people live in 'Eurasia', and most of the world's physical wealth is there as well, both in its enterprises and underneath its soil. 'Eurasia' accounts for about three-fourths of the world's known energy resources." — Zbigniew Brzezinski, The grand chessboard : American primacy and its geostrategic imperatives
The Russian " Eurasianism" corresponded initially more or less to the land area of Imperial Russia in 1914, including parts of Eastern Europe.  One of Russia's main geopolitical interests lies in ever closer integration with those countries that it considers part of "Eurasia."  This concept is further integrated with communist eschatology by author Alexander Dugin as the guiding principle of "self-sufficiency of a large space" during expansion. 
The term Eurasia gained geopolitical reputation as one of the three superstates in 1984,  George Orwell's  novel where constant surveillance and propaganda are strategic elements (introduced as reflexive antagonists) of the heterogeneous dispositif such metapolitical constructs used to control and exercise power. 
Across Eurasia, several single markets have emerged, including the Eurasian Economic Space, European Single Market, ASEAN Economic Community, and the Gulf Cooperation Council. There are also several international organizations and initiatives which seek to promote integration throughout Eurasia, including:
In ancient times, the Greeks classified Europe (derived from the mythological Phoenician princess Europa) and Asia which to the Greeks originally included Africa  (derived from Asia, a woman in Greek mythology) as separate "lands". Where to draw the dividing line between the two regions is still a matter of discussion. Especially whether the Kuma-Manych Depression or the Caucasus Mountains form the southeast boundary is disputed, since Mount Elbrus would be part of Europe in the latter case, making it (and not Mont Blanc) Europe's highest mountain. Most accepted is probably the boundary as defined by Philip Johan von Strahlenberg in the 18th century. He defined the dividing line along the Aegean Sea, Dardanelles, Sea of Marmara, Bosporus, Black Sea, Kuma–Manych Depression, Caspian Sea, Ural River, and the Ural Mountains. However, at least part of this definition has been subject to criticism by many modern analytical geographers like Halford Mackinder, who saw little validity in the Ural Mountains as a boundary between continents. 
In modern usage, the term "Eurasian" is a demonym usually meaning "of or relating to Eurasia" or "a native or inhabitant of Eurasia".  It is also used to describe people of combined "Asian" and "European" descent.
Located primarily in the eastern and northern hemispheres, Eurasia is considered a supercontinent, part of the supercontinent of Afro-Eurasia or simply a continent in its own right.  In plate tectonics, the Eurasian Plate includes Europe and most of Asia but not the Indian subcontinent, the Arabian Peninsula or the area of the Russian Far East east of the Chersky Range.
From the point of view of history and culture, Eurasia can be loosely subdivided into Western and Eastern Eurasia. 
Nineteenth-century Russian philosopher Nikolai Danilevsky defined Eurasia as an entity separate from Europe and Asia, bounded by the Himalayas, the Caucasus, the Alps, the Arctic, the Pacific, the Atlantic, the Mediterranean, the Black Sea and the Caspian Sea, a definition that has been influential in Russia and other parts of the former Soviet Union.  Nowadays, partly inspired by this usage, the term Eurasia is sometimes used to refer to the post-Soviet space – in particular Russia, the Central Asian republics, and the Transcaucasus republics – and sometimes also adjacent regions such as Turkey and Mongolia.
The word "Eurasia" is often used in Kazakhstan to describe its location. Numerous Kazakh institutions have the term in their names, like the L. N. Gumilev Eurasian National University ( Kazakh: Л. Н. Гумилёв атындағы Еуразия Ұлттық университеті; Russian: Евразийский Национальный университет имени Л. Н. Гумилёва)  ( Lev Gumilev's Eurasianism ideas having been popularized in Kazakhstan by Olzhas Suleimenov), the Eurasian Media Forum,  the Eurasian Cultural Foundation ( Russian: Евразийский фонд культуры), the Eurasian Development Bank ( Russian: Евразийский банк развития),  and the Eurasian Bank.  In 2007 Kazakhstan's president, Nursultan Nazarbayev, proposed building a " Eurasia Canal" to connect the Caspian Sea and the Black Sea via Russia's Kuma-Manych Depression to provide Kazakhstan and other Caspian-basin countries with a more efficient path to the ocean than the existing Volga-Don Canal. 
This usage can also be seen in the names of Eurasianet,  The Journal of Eurasian Studies,  and the Association for Slavic, East European, and Eurasian Studies,  as well as the titles of numerous academic programmes at US universities.     
This usage is comparable to how Americans use " Western Hemisphere" to describe concepts and organizations dealing with the Americas (e.g., Council on Hemispheric Affairs, Western Hemisphere Institute for Security Cooperation).
By convention there are seven continents: Asia, Africa, North America, South America, Europe, Australia, and Antarctica. Some geographers list only six continents, combining Europe and Asia into Eurasia. In parts of the world, students learn that there are just five continents: Eurasia, Australia (Oceania), Africa, Antarctica, and the Americas.
And since Africa and Asia are connected at the Suez Peninsula, Europe, Africa, and Asia are sometimes combined as Afro-Eurasia or Eurafrasia.
Anthropologically, historically and linguistically Eurasia is more appropriately, though vaguely subdivided into West Eurasia (often including North Africa) and East Eurasia