Brick studs und rocket: was sie gemeinsam haben

1. Schritt 1. Brick studs — ist Teil von — LEGO bricks. Studs on top fit into the tubes of the brick below.
2. Schritt 2. LEGO bricks — nutzt — Interchangeable parts. Any brick fits any other.
3. Schritt 3. Interchangeable parts — wird verwendet in — Revolver. Colt used machine production of interchangeable parts.
4. Schritt 4. Revolver — nutzt — Gunpowder. Gunpowder propels the bullet.
5. Schritt 5. Gunpowder — wird verwendet in — Rocket. The first rockets were powered by gunpowder.

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