IJsselmeer
…approved the Zuiderzee Works, a major hydraulic engineering project that involved building dykes, draining parts of the Zuiderzee, and constructing the Afsluitdijk to keep tides and high water out. Construction began in 1927, and in 1932 the Zuiderzee was closed off by the Afsluitdijk, a 32-kilometre (20 mi) dyke…