This is the evolutionary history of a species or group of related species.

Hi, there! This is called phylogeny. Notice the root word 'phylum, which is associated with classification systems of living things. Hope this was helpful!

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

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