Spices and textile, including other raw materials like capital, wood, agricultural products like cotton, indigo, etc...
Cultural diffusion means that some cultures and values would spread from one place to another. So it's not enough for them to be preserved in the original place, (this makes us exclude options B and C) but they need to be spread to other places, such as to other parts of the US - the correct answer is a)
As "Technical obsolescence".
Technical obsolescence<span> is the point at which an item is not in fact
better than other comparative items. For instance, you may purchase the most
recent iPhone, which has the most efficiency and biggest screen of any iPhone
accessible. Technical obsolescence for the most part happens when another item has been made to
supplant a more established adaptation.</span>
