So, like a balloon which first became inflated and then became deflated?The irony - over the centuries, Poland has expanded and contracted back into something approximating its original size.
The irony - over the centuries, Poland has expanded and contracted back into something approximating its original size.
For what it's worth, here is a map which is similar to yours:
https://upload.wikimedia.org/wikipedia/commons/b/b9/Border_changes_in_history_of_Poland.png
I'd be very interested in seeing a gif of Poland from the beginning to '17.