Asia is the largest continent, covering approximately 30 percent of the Earth’s land. It is also the world’s most populous continent, with roughly 60 percent of the global population. Asia makes up the eastern portion of the Eurasian supercontinent; Europe occupies the western portion. Asia is bordered by the Arctic, Pacific, and Indian oceans, and most geographers define Asia’s western border as an irregular line that follows the Ural Mountains, the Caucasus Mountains, the Caspian Sea, and the