Answer:
Mainly technological advancements.
Explanation:
A comma should be after each separate things you are listing. The answer is:
<span>
The
Library of Congress is home to the world's most extensive comic-book
collection, oldest original newspaper collection, and most abundant
collection of cartographic items.</span>
If your including the cost of the items that were bought you still only really lost thirty dollars, but you also lost the items that were bought with the 70
