<span>b. spice
</span><span> The product that was commonly traded along the Silk Road were spices. Spices were produced in countries far away from Europe and they were very expensive, both because the production was limited and because the trip to collect them was dangerous. The Silk Road linked Asia and Europe via land for many centuries before the age of Discoveries. </span>
B. The Wright brothers . . .

A. they became more expensive because they used technology
Answer:
Walking Purchase, (Aug. 25, 1737), land swindle perpetrated by Pennsylvania authorities on the Delaware Indians, who had been the tribe most friendly to William Penn when he founded the colony in the previous century.
Explanation: