It is called Flevoland, the 12th province.
The Dutch call their area of land reclaimed from the sea "polders." These are low-lying lands enclosed by dikes where water is drained to create arable land. Polders are a notable feature of the Dutch landscape and have helped expand their habitable territory.
ondergelopen grond
Growing crops
The dutch province of Flevoland was reclaimed from the 'Zuiderzee' (South Sea).
Land reclaimed from the sea is often referred to as reclamation land or land reclamation. It involves altering coastlines or waterways to create new land for various purposes such as urban development or agriculture.
in the Netherlands we call reclaimed land "polders"
polder
They reclaimed it from the North Sea, not land.
Lands reclaimed by the sea can be called either land fills or reclamation ground. In New Zealand, it is called land rehabilitation.
The Dutch province entirely made up of reclaimed land is Flevoland. It was created through the draining of parts of the Zuiderzee, a large inland sea, as part of the Zuiderzee Works, which began in the early 20th century. Flevoland was officially established as a province in 1986 and is known for its agricultural land and modern towns.
The Netherlands is known for reclaiming land from the sea through extensive land reclamation projects. Around half of the country's land is reclaimed from the sea, using systems of dikes, canals, and pumping stations to manage water levels and create new land.
The Dutch put windmills all over the land to clear the water on the surface. Know they have lots of dyke's to keep the water out.