They first build dikes around some immersed land, then pump the water out of it (formerly using windmills), then use it for growing crops.
There are over a dozen countries that have polders, but Holland (also known as the Netherlands) has the most and is the country most famous for them. Because so much of the land lies below sea level, it is necessary to build dikes or embankments to hold back the ocean water and prevent flooding. The Dutch first started building polders about a thousand years ago and there are now about 3,000 in their country. Polders are low lying tracts of land usually protected by embankments or dikes. Comes from a Dutch word 'poire' Land claimed from water covered sources, lakes and seas.
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The Chinese have built dams to prevent flooding.
Levees, dikes.
The Netherlands (The Dutch built the dikes):-)
The two main types of dikes are igneous dikes, which form when magma is forced into fractures in rocks and then solidifies, and coastal dikes, which are man-made structures built along coastlines to protect against flooding and erosion.
Dikes are built by engineers and construction workers to prevent flooding by controlling the flow of water in rivers, lakes, and coastal areas. The construction of dikes requires careful planning, engineering expertise, and maintenance to ensure they remain stable and effective in protecting against flooding.
because they need to built it to live in it
* The Chinese built dikes to control the annual flooding. * Due to the lack of mannure farmers often used human waste for fertiliser.
Because dikes are built at the edge of the ricefields to stop the water from carrying the soft soil away
Dikes, mills and many villages are built on terps.
Friesen- People who built dikes and dams in Friesland =) Hope this helps :)
they bult dikes and dams to rederect the water and to clam te water.
Dikes are used to control and redirect the flow of water, particularly in flood-prone areas or near bodies of water. They are typically earthen embankments or walls made of concrete or stone. Dikes help to prevent flooding by confining water to specific channels and protecting nearby communities and agricultural lands.