They avoid being detected because this would throw off the behavior patterns that exist naturally and they don't want their presence being known since this might throw it off.<span />
Answer:
Ok HEAR ME OUT THERE IS NO WAY IM DOING THIS
Explanation:
The Gupta empire.........
Marco Polo was the trader that traveled from Venice, Italy to China and brought back information about Asia. Marco Polo was a Venetian merchant traveler. His father was the person from whom he learned the ways of mercantile trade. He did travel to China but he was not the first person. he made a detailed description in his books.
