East Prussia enclosed the bulk of the ancestral lands of the Baltic Old Prussians. During the 13th century, the native Prussians were conquered by the crusading Teutonic Knights. The indigenous Balts who survived the conquest were gradually converted to Christianity. Because of Germanization and colonisation over the following centuries, Germans became the dominant ethnic group, while Poles and Lithuanians formed minorities. From the 13th century, East Prussia was part of the monastic state of the Teutonic Knights. After the Second Peace of Thorn in 1466 it became a fief of the Kingdom of Poland. In 1525, with the Prussian Homage, the province became the Duchy of Prussia. The Old Prussian language had become extinct by the 17th or early 18th century. 

Because the duchy was outside of the core Holy Roman Empire, the prince-electors of Brandenburg were able to proclaim themselves King of Prussia beginning in 1701. After the annexation of most of western Royal Prussia in the First Partition of the Polish-Lithuanian Commonwealth in 1772, eastern (ducal) Prussia was connected by land with the rest of the Prussian state and was reorganized as a province the following year (1773). Between 1829 and 1878, the Province of East Prussia was joined with West Prussia to form the Province of Prussia.
When were the native Prussians conquered?
by who?
who survived?
what were they converted to?
Who was the dominant ethnic group?
and the minority?
why?
When was the second peace of Thorn?
What happened in 1525?
What happened to the language?
when?
Was duchy in the core Holy Empire?
what happened because of this?
When did this start?
When was eastern Prussia connected by land with the rest of the state?
When was it recgonized?
What forms Province of prussia?
when did this happen?
Who were the native Prussians defeated by?
that was when?
During the 13th century
During the 13th century, the native Prussians were conquered
by the crusading Teutonic Knights
the native Prussians were conquered by the crusading Teutonic Knights
The indigenous Balts
The indigenous Balts who survived
Christianity
The indigenous Balts who survived the conquest were gradually converted to Christianity.
the Germans
Germans became the dominant ethnic group
Poles and Lithuanians
while Poles and Lithuanians formed minorities
Because of Germanization and colonisation
Because of Germanization and colonisation over the following centuries
1466
After the Second Peace of Thorn in 1466
the province became the Duchy of Prussia
In 1525, with the Prussian Homage, the province became the Duchy of Prussia
it became extinct
The Old Prussian language had become extinct
by the 17th or early 18th century
had become extinct by the 17th or early 18th century. 
No
Because the duchy was outside of the core Holy Roman Empire
the prince-electors of Brandenburg were able to proclaim themselves King of Prussia
 the prince-electors of Brandenburg were able to proclaim themselves King of Prussia
in 1701
proclaim themselves King of Prussia beginning in 1701
in 1772
in 1772, eastern (ducal) Prussia was connected by land with the rest of the Prussian state
in 1773
and was reorganized as a province the following year (1773)
the Province of East Prussia and West Prussia
the Province of East Prussia was joined with West Prussia to form the Province of Prussia
Between 1829 and 1878
Between 1829 and 1878, the Province of East Prussia was joined with West Prussia to form the Province of Prussia.
by the crusading Teutonic Knights
the native Prussians were conquered by the crusading Teutonic Knights
During the 13th century
During the 13th century, the native Prussians were conquered by the crusading Teutonic Knights