Before Gutenberg, why were books usually very expensive?

They were expensive because a ton of work was put into books. They had to make the paper, handwrite the words, and make the cover, which was all very expensive

Explanation:

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.