good location in resourceful territory
Erm.... Countless neighbours? Most of it an indefensible plain without natural borders (prime battlefield for foreign armies), besides a bit of coal no natural resources to speak of....
relatively safe region of Europe.
You've got to be kidding! Ever heard of the 100 years war? The 30 years war? The liberation wars??? The countless other wars before WWI and WWII??
When Prussia gained power over German countries it imposed more ruthless style of policy : envy against strong , disrespect of the weak.
Oh puuuuleeeeese! You Poles have it with Prussia don't you! I'm not sure where you get your info from but if the rest of your post stems from the same sources then it's quite unrealistic!
That will be the warning for others, since God does not tolerate breaking His laws for too long.*stops reading*
Back to bible studies for you and leave history for the grown ups...