782
Bremen is documented for the first time.
787
Charlemagne founded the episcopat Bremen. Bremen becomes the base for christianization in northern Europe.
845
Residence of the archdiocese Hamburg-Bremen (archbishop Ansgar).
888
King Arnulf grants the market-privilege to the collegiate church.
965
Emperor Otto I. grants the market-privilege to the archbishop Adaldag
1043-1072
First economic prosperity under archbishop Adalbert
1186
Emperor Friedrich Barbarossa confirms the first common laws
About 1300
The town-bricklayer is constructed
13. century
Bremen becomes independent from the archbishops
1358
Bremen becomes a member of the Hansa, a union of Hanseatic cities, which dominated trade in the North Sea and Baltic regions until well into the 16th century.
1619
The first artificial seeport is errected
1646
Bremen becomes a Freie Reichsstadt / independent town after the battle against Sweden in the 30 Years War
1783
Start of direct trading with the USA
1806
After the liquidation of the Holy Roman Empire, the burgomaster in office at the time Johann Smidt, ensured the independence of the Free City of Bremen in the German Alliance.
1815
Bremen becomes a sovereign state in the German Federation at the Vienna Congress
1827
Bremerhaven is founded at the mouth of the Weser, for it seemed that the river would be silted up.
1866
Bremen becomes a member of the Northgerman Union
1871
Foundation of the German Reich. Bremen becomes a federal state with the constitutionally laid down title Free Hanseatic City of Bremen.
1888
Connection of Bremen to the German Customs Union; opening of the first free harbour
1920
Start of the airport
1928
Start of the Columbuskaje in Bremerhaven (railway-station at the shore)
1947
The US occupying forces proclaimed the state of Bremen and this state continued to exist in the Federal Republic of Germany.