General Information
File:OldPrussia.png Old Prussia is a Baltic tribe that is playable from January 1st, 2 to 1252. The Old Prussians were Germanized after the successful crusade led by the 
Teutonic Order, thus creating what would later be known as the German Kingdom of 
Prussia. Even after 1252 when File:OldPrussia.png Old Prussia ceases to exist, they can still be released in the province of Kurland until 1850, the year when the last Old Prussian province is assimilated.
See also: Vandals, Goths, Pomerania, Teutonic Order, Livonian Order, Prussia, Latgalia, Lithuania, Livonia, Curonia
Strategy
Roman-Parthian War
File:OldPrussia.png Old Prussia starts off in a rather odd position. You are located in Northeast Europe, which is completely empty. You won't have any neighbors east of your country for awhile, so in the mean time focus on expanding your way through the Germanic tribes, starting with the 
Goths, 
Vandals, and 
Pomerania. Your goal is to eventually border the 
Roman Empire. That way, once the Romans start to crumble, that's when you want to make a push into the Empire, securing as much land as you can.
Events
From 2 to 495, if the Roman Empire, 
Western Roman Empire, 
Byzantine Empire, or 
Gallia is collapsing, any barbarian tribe can auto-annex some occupied provinces given if you are at war with them. This is limited, you can only annex up to 4 times your country's base tax, invade wisely.
Decisions
Reform Government
Requirements:
- At peace
- Administrative Power of at least 100
- One of the following must be true:
- is in the Christian
- is in the Muslim group
- is Jewish
- is Zoroastrian
Upon Enactment:
- Lose 100 Administrative Power
- Lose 1 Stability
- Type of Government Changed to Feudal Monarchy
Tech Reform
Requirements:
- At peace
- Administrative Technology of at least 19
- Administrative Power of at least 100
- Do not have: Barbarian Tribe, Tribal Despotism, Tribal Democracy, Tribal Federation
Upon Enactment:
- Lose 100 Administrative Power
- Tech Group is changed to "Western"
- Unit Types change to "Western"
Old Prussian Ideas and Traditions
Traditions:
- +50% Hostile Core-Creation Cost On Us
- +10% Morale of Armies
Ideas:
- Amber Road: +10% Trade Efficiency
- Kriwo Kriweto: +2% Missionary Strength
- Holy Streams and Forests: +2 Tolerance of the True Faith & -10% Stability Cost Modifier
- Natural Defenses: +20% Fort Defense
- The Northern Crusade: −10% Military Technology Cost
- Nomadic Lifestyle: -1 National Unrest
- Crossroads of Nations: +3 Diplomatic Relations
Ambitions:
- +1 Yearly Legitimacy