Eurasia

Eurasia is the combined continental landmass of Asia and Europe. The term is a portmanteau of its two constituents. Located primarily in the Northern and Eastern Hemispheres, it is bordered by the Atlantic Ocean on the west, the Pacific Ocean to the east, the Arctic Ocean on the north, and by Africa, the Mediterranean Sea, the Pacific Ocean and the Indian Ocean to the south. The division between Asia and Europe as two different continents is a historical and cultural construct, with no clear physical separation between them; thus, in some parts of the world, Eurasia is recognized as the largest of five or six continents.

Eurasia covers around 55,000,000km2, or around 36.2% of the Earth's total land area. The landmass contains around 5.0 billion people, equating to approximately 72% of the human population. Humans first settled in Eurasia between 60,000 and 125,000 years ago.

Overview
Physiographically, Eurasia is a single continent. The concepts of Asia and Europe as distinct continents date back to antiquity and their borders are geologically arbitrary, with the Ural and Caucasus ranges being the main delimiters between the two. Eurasia is connected to Africa at the Suez Canal, and Eurasia is sometimes combined with Africa as the supercontinent Afro-Eurasia.

History
Eurasia has been the host of many ancient civilizations, including those based in Mesopotamia and the Indus Valley.

The Silk Road symbolizes trade and cultural exchange linking Eurasian cultures through history and has been an increasingly popular topic. Over recent decades the idea of a greater Eurasian history has developed with the aim of investigating the genetic, cultural and linguistic relationships between Asian and Eureopean cultures of antiquity, which had long been considered distinct.

Geology
Eurasia formed 375 to 325 million years ago with the merging of Siberia (once a separate continent), Kazakhstania, and Baltica, which was joined to Laurentia, now North America, to form Euramerica. Chinese cratons collided with Siberia's southern coast.

Geopolitics
Originally, “Eurasia” is a geographical notion: in this sense, it is simply the biggest continent; the combined landmass of Asia and Europe. However, geopolitically, the word has several different meanings, reflecting the specific geopolitical interests of each nation. “Eurasia” is one of the most important geopolitical concepts; as Zbigniew Brzezinski observed:

''“Ever since the continents started interacting politically, some five hundred years ago, Eurasia has been the center of world power. 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.”'''

In the widest possible sense, the geopolitical definition of “Eurasia” is consistent with its geographical area. This is sometimes the way the word is understood in countries located at the fringes of, or outside, this area, and it is generally what is meant by “Eurasia” in political circles (see Zbigniew Brzezinski) in the USA, Japan and India.

In Western Europe when political scientists talk about “Eurasia”, they generally mean Russia (including Ukraine) integrated into Europe, economically, politically, and even militarily. Since Napoleon, European strategists have understood the importance of allying with Russia, and the potential consequences of failing to do so. At the moment one of the most prominent projects of European Union is Russia - EU Four Common Spaces Initiative. A political and economic union of former Soviet states named the Eurasian Union is scheduled for establishment in 2015, similar in concept to the European Union. As of 2014 neither encompasses all states within Eurasia.

The Russian concept of “Eurasia” is very different from the European one. It is a view that has older roots than the European one - not surprisingly, considering Russia's geographic position. Russian politologists traditionally view Russia itself, being both European and Asian, as “Eurasian.” The geopolitical area of the Russian concept of “Eurasia” corresponded initially more or less to the land area of Imperial Russia in 1914, including parts of Eastern Europe. There is undeniably an influence of Panslavism in this definition; originally the idea of “Eurasia” was more romantically rooted in natural geography. It was the idea that the people scattered across the land called “Eurasia” shared common spiritual values due to its geographic traits, such as a flat land with few coastlines but important rivers, a particular climate (continental, often harshly so), and a certain landscape (steppe, taiga, tundra). This idea was more or less realised, but with difficulty, during the last phases of the Russian Empire and was then realised again with the Soviet Union after 1945, though not stably enough for enduring success. Today, though this Russian geopolitical interest still exists, the physical area of the Russian “Eurasia” is now more realistically assessed. The Russian view today is that “Eurasia” consists of the land lying between Asia and Europe proper; namely, those made up of Western and Central Russia, Belarus, Ukraine, part of Caucasus, Uzbekistan, Kazakhstan, Tajikistan, and Kyrgyzstan (see Eurasian Economic Union). Just as in the case of the European concept of “Eurasia,” the Russian version of “Eurasia” is a geopolitical interest that underpins foreign policy in that part of the world. Thus, it is not surprising that today one of Russia's main geopolitical interests lies in ever closer integration with those countries that it considers part of “Eurasia.”

Every two years since 1996 a meeting of most Asian and European countries is organised as the Asia-Europe Meeting (ASEM).

History of the Asia and Europe division
In ancient times, the Greeks classified Europe (derived from the mythological Phoenician princess Europa) and Asia (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 Ural Mountains.

Geography
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.

Post-Soviet countries
Eurasia is also sometimes used in geopolitics to refer to organizations of or affairs concerning the post-Soviet states, in particular, Russia, the Central Asian republics, and the South Caucasus republics. A prominent example of this usage is in the name of the Eurasian Economic Community, the organization including Kazakhstan, Russia, and some of their neighbors, and headquartered in Moscow, Russia, and Astana, the capital of Kazakhstan.

The word "Eurasia" is often used in Kazakhstan to describe its location. Numerous Kazakh institutions have the term in their names, like the Eurasian National University, the Eurasian Media Forum, the Eurasian Cultural Foundation 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 in order to provide Kazakhstan and other Caspian-basin countries with a more efficient path to the ocean than the existing Volga-Don Canal. 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).