Most of the Netherlands is below sea level so it needs things like dams, barriers, and windmills.
Why wind?.Wind turns windmills which can operate pumps to pump the water out.
Barriers and dams are like big walls that hold out water.
One of the bariers that looks realy cool is called the Maeslant Barrier (to get to some realy cool puzzles go to the link just given, then go to "various", puzzles).
When a storm comes computers will close the Maeslant Barrier.
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