. Cause: Exotic goods from the East
appeared in European marketplaces.

People became interested in India, China, and the rest of Asia.

Explanation:  

Marco Polo became the first European explorer to travel to Asia through Silk Road and recorded the account of his experience.  Marco Polo, an Italian explorer and merchant, wrote the book 'The Travels of Marco Polo'. The Europeans became interested after reading the book decided to explore the outside world by visiting the lands Marco Polo had visited and brought goods like exotic goods, spices, silk.

answer; i believe that the correct answer is ( troxel v. granville);

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.