Question

Poland as an as nation's was not able to protect their border at that time?

Answer 1

Answer:

The 'Borders of Poland are 3511[1] or 3582 kilometers long.[2] The neighboring countries are Germany to the west, the Czech Republic and Slovakia to the south, Ukraine and Belarus to the east, and Lithuania and the Russian province of Kaliningrad Oblast to the northeast. To the north, Poland is bordered by the Baltic Sea.