Answer:
Nazca Lines. The Nazca Lines /ˈnæzkɑː/ are a group of very large geoglyphs formed by depressions or shallow incisions made in the soil of the Nazca Desert in southern Peru. They were created between 500 BCE and 500 CE.
Explanation:
Assuming that you want this simplified...


Use the FOIL method and combine like terms:


And your final answer is: 
The imaginary line that circles the Earth horizontally half way between the North and South Pole is called C. the Equator.
The answer would be C. the movement of plants, animals, people, and diseases between the old world and the new world.
Hope this helped!
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