Rubble stone mound e screw press: o que têm em comum
- Passo 1. Rubble stone mound — faz parte de — Quebra-mar. A stone ball.
- Passo 2. Quebra-mar — faz parte de — Seaport. A breakwater.
- Passo 3. Seaport — utiliza — Sailing ship. A port receives ships.
- Passo 4. Sailing ship — utiliza — Mercator projection. Navigating along straight rhumb lines.
- Passo 5. Mercator projection — utiliza — Gutenberg printing press. Maps were printed in large numbers.
- Passo 6. Gutenberg printing press — tem como parte — Screw press. Gutenberg adapted the screw press known from pressing grapes.