Due to trade with and emigration to North America, the port and the town grew quickly.In 1848, Bremerhaven became the home port of the German Confederation's Navy under Karl Rudolf Brommy.
Finally, in 1827, the city of Bremen under Burgomaster Johann Smidt bought the territories at the mouth of the Weser from the Kingdom of Hanover.The Emperor Ferdinand III ordered his vassal Christina of Sweden, then Duchess regnant of Bremen-Verden, to restitute Bremerlehe to Bremen.However, Swedish Bremen-Verden soon enacted the First Bremian War (March to July 1654) and in the following peace treaty (Recess of Stade; November 1654) Bremen had to cede Bremerlehe and its surroundings to Swedish Bremen-Verden.In 1381, the city of Bremen established de facto rule over the lower Weser stream, including Lehe, later therefore called Bremerlehe.Early in 1653, Swedish Bremen-Verden's troops captured Bremerlehe by force.
Bremen sought this territory to retain its share of Germany's overseas trade, which was threatened by the silting up of the Weser around the old inland port of Bremen.
Bremerhaven (literally in English: ) was founded to be a haven for Bremen's merchant marine, becoming the second harbour for Bremen, despite being 50 km (31 mi) downstream.
, literally "Bremen's harbour", Low German: Bremerhoben) is a city at the seaport of the Free Hanseatic City of Bremen, a state of the Federal Republic of Germany.
It forms an enclave in the state of Lower Saxony and is located at the mouth of the River Weser on its eastern bank, opposite the town of Nordenham.
Though a relatively new city, it has a long history as a trade port and today is one of the most important German ports, playing a crucial role in Germany's trade.
These tiny villages were built on small islands in the swampy estuary.