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.
The Great Emperor
The most brutal emperor in the history of world.He was the founder of the most contiguous empire of the world i.e. the Mongol empire.He made an army by himself by uniting some nomadic tribes and trained them.