Original: MÃ 1\/4 nden by ( the confluence of ) the Fulda and Werra , it flows through Lower Saxony , then reaching the historic ( Hanseatic League ) port city of Bremen before emptying into the North Sea 50 km further north at Bremerhaven , which is also a seaport .
Simplified: Formed at Hannoversch MÃ 1\/4 nden by the confluence of the Fulda and Werra rivers , it flows through Bremen to the North Sea , and has a length of 440 km .