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A submarine (or sub) is a watercraft capable of independent operation underwater

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while it is also considered a contributory factor in a number of genocides and the 1918 influenza epidemic

Cote D'Ivoire Dinosaur Souvenir Sheet of 4 Stamps Mint NH Japan A submarine (or sub) isCote D'Ivoire Dinosaur Souvenir Sheet of 4 Stamps Mint NH Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233. 23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the TriassicJurassic extinction event 201 million years ago; their dominance