The Achtermeer polder, south of Alkmaar in the Dutch province of North Holland, is the first known polder in the Netherlands. In 1532, Emperor Charles...

were constructed in the 11th century. The oldest extant polder is the Achtermeer polder, from 1533. As a result of flooding disasters, water boards called...

flooding the polders in which the Spanish troops were camped, like the Achtermeer polder. This forced the Spanish commander, Don Fadrique, the son of the...