On 24 October 1795 Poland was erased from the world map after the treaty between Russia, Prussia and Austria. (the Third Partition of Poland)
After 123 years, on
11 November 1918, due to geopolitical changes and international pressure Poland finally regained its independence.(however, not for long).
During the communist times (45-89), it was forbidden to celebrate on this day.
Below, Jozef Pilsudski, one of the fathers of this great success. (there were many more, representing Polish interests among Russian and Austrian elites, but Pilsudski was the key figure in this struggle for independence).

Time to celebrate