This is my favourite opener for Poland. While not immediately powerful, it sets you up for greatness that is Wojtek, the Bear Emperor. You should be able to replicate it easily. If you try to use it, let me know how it worked out for you.

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Hearts of Iron IV Poland.
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hearts of Iron IV challenge
hearts of iron 4 challenge
hoi4 challenge
Hearts of Iron IV Poland opening
Hearts of Iron IV Wojtek the Bear

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