The invasion of the sea in the Dutch territory.

What now is known in Holland as the “Gulf Zuiderzee“, was, to the century XIII, a land more or less united drought to the North of Holland by the west, and to the province of Friesland by the east, being extended to the north from Amsterdam to the row of islands situated to the north of those provinces.in a series of hardly storms the north Sea of opened step The exterior barrier, carrying to the destruction and death to innumerable farmsteads and transforming a flourishing countryside in a salty lake.



Most of the floor of Holland is mob, and this fact affects arduously as for the construction of the houses.Amsterdam, the most important one of the Dutch cities, raises itself in the place of a treacherous marsh and is built entirely on steer. The placement of steer is a so fast process in Holland as slow in other countries.


Amsterdam is likewise an example of constant change operated in the system of channels.in recent years some of their leaks have been blocked with sediments and even themselves dry.the dredges work always and the engineers are constantly busy in resolving any difficulty that themselves present.in reality, almost we can say that the construction and the repair of dikes and channels and the formation of “polders” are the. It will be because of it that in no another country the profession and engineer so is valued, knowing that the Dutch engineers possess an excellent reputation anywhere of the world.