1. The silk road was an ancient network of trade routes which connected the east and west.
2. Horses, grapes, animal furs, honey, etc..
3. they wanted to find gold and riches and increase trade by discovering products such as silks and spices.
4. used for reckoning time, it allowed people to calculate the position of the sun and prominent stars.
im not sure about 5...sorry :((
i hope this helped you out a bit :) <3