Mozart I think hope this helps
Answer:
The inner planets ( mercury , venus ,earth and mars ) are closer to the sun, hence, the lighter substances such as hydrogen evaporated away. The remaining composition of the planets resulted in the formation of rocky, mountainous surface of the planets. Thus , gaining the name as ''TERRESTRIAL PLANETS ''.
Explanation:
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Fort Union was established to protect the cimarron route of the Santa Fe trail due to incessant attacks from the Indians. The Indians used to attack the American travelers who passed through that route.
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