How are hardcover books made? How did the covers get so hard?

rich1.0How are hardcover books made? How did the covers get so hard?Cloudy with a Chance of Answershttps://cloudyanswers.twistytwist.com/@cloudyanswersCloudy with a Chance of Answershttps://cloudyanswers.twistytwist.com/@cloudyanswershttps://cloudyanswers-content.sfo2.digitaloceanspaces.com/podcasts/cloudyanswers/how-are-hardcover-books-made_og.png12001200<iframe src="https://cloudyanswers.twistytwist.com/@cloudyanswers/episodes/how-are-hardcover-books-made/embed" width="100%" height="112" frameborder="0" scrolling="no"></iframe>485112