Shafts for harnessing a horse e rolling mill: o que têm em comum

1. Passo 1. Shafts for harnessing a horse — faz parte de — Sledge. A rod.
2. Passo 2. Sledge — evoluiu para — Carro. The wheeled cart replaced drag sledges and sleds.
3. Passo 3. Carro — faz parte de — Wagonway. Wagons rolled on the rails.
4. Passo 4. Wagonway — evoluiu para — Railway track. Cast-iron and steel rails replaced wooden ones.
5. Passo 5. Railway track — utiliza — Rolling mill. Rails are rolled.

Abrir Evothings