Swedes do not have allies, but they do not need them.
Trade is difficult at the beginning of the game because of the low number of trade ports.
Note that the Swedes have a very numerous cavalry.
In some regiments you will find even a 100 horsemen.
Berlin is a very profitable city and Prussia have no allies.
After the fight you will not border with them, so they shouldn’t be a problem.
Prepare quite a large army to keep civilian population in peace.
2.IfCourlandwill declare war to you, build military infrastructure and training centers in St. Petersburg (line infantry).
Join the with the army from Ingra.
With 15-20 regiments you will take Courland without an effort.
3.With Courland and lot of troops in the region it’s possible for you to attempt to attackEast Prussia.
You have conflict with Prussia anyway, and Krolewiec is undoubtedly very useful for you.
4.Start to train some army in Stockholm.
When you will achieve a leadership in Scandinavia, take care ofNorway.
There is a big risk that the enemy ships will unable you to reach Copenhagen by land.
You have to invest some money in fleet.
6.As a part of your territorial expansion I propose to takeIceland.
This move will finish Denmark for good and you will have one more region.
7.If Poland or Russia won’t attack you, you must attack them.
The first of them in St. Petersburg (to attack Russia andMoscow).
8.The second army should be created in Berlin or Krolewiec.
Take the whole Poland (starting with Western Prussia, and ending with Galicia and Podole).
Diplomacy
Diplomacy is a very simple thing in the case of Sweden.
Before you will start a war with Poland, they will offer you some lands for Prussia and Brandenburg.

As the Poles do not have much to offer, I suggest to ignore their proposition.
Be sure to attack Russia first and then Poland.
If you will do it in another way, Saxony can join the conflict.
You do not need to have so many enemies.
Additional notes
Do not hurry with Russian and Polish conquests.
The major thing is their religion - population consists of Catholics and Orthodox.
You need some time to convert people to Protestantism.
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