Question

what did the books teach in twentieth century​

Answer 1

Answer:

The twentieth century was called the 'Era of the Book' because in those days there were books about everything, from anteaters to Zulus. Books taught people 'how to', 'when to', 'where to' and 'why to'. They illustrated, educated, punctuated and even decorated.

Explanation:

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Answer 2

hmm... they teach about historyolder than them and maths formula that was till then