- Threeinvadingbattleshipsweresunkatonestroke.Allthebattleshipscanrefreshinthisharbor.Oneofhisjobswastotestthehorsepoweronbattleships,usingameterwithatorsionspringinside.Aswellasprovidingashortcutforbattleships,thecanalbecameavitalarteryofworldtrade....
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