Geography of South AmericaThe geography of South America contains many diverse regions and climates. Geographically, South America is generally considered a continent forming the southern portion of the landmass of the Americas, south and east of the Colombia–Panama border by most authorities, or south and east of the Panama Canal by some. South and North America are sometimes considered a single continent or supercontinent, while constituent regions are infrequently considered subcontinents.
History of East AsiaEast Asia generally encompasses the histories of China, Japan, Korea, Mongolia, and Taiwan from prehistoric times to the present. Each of its countries has a different national history, but East Asian Studies scholars maintain that the region is also characterized by a distinct pattern of historical development. This is evident in the interrelationship among traditional East Asian civilizations, which not only involve the sum total of historical patterns but also a specific set of patterns that has affected all or most of traditional East Asia in successive layers.