Jigsaw puzzle e screw press: o que têm em comum

1. Passo 1. Jigsaw puzzle — é feito de — Wood pulp. Cardboard.
2. Passo 2. Wood pulp — é material para — Newspaper. Cheap newsprint.
3. Passo 3. Newspaper — utiliza — Rotary printing press. Mass print runs.
4. Passo 4. Rotary printing press — evoluiu de — Gutenberg printing press. Cylinders instead of a flat press.
5. Passo 5. Gutenberg printing press — tem como parte — Screw press. Gutenberg adapted the screw press known from pressing grapes.

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