Speaking at the celebrations in Katowice, the Polish head of state underlined the contribution of the Silesian insurgencies to the country's independence.
He said: "As we speak about recovery of independence in that symbolic moment, November 11, 1918; as we speak of the victorious Greater Poland Rising and the victory over the Bolsheviks in 1920, with the same patriotic emotion we speak of the Silesian Uprisings and especially the Third."
Ethnic Poles in Upper Silesia fought a series of three armed insurgencies from 1919 to 1921 to break away from Germany and join newly independent Poland.
The third erupted in the night of May 2nd 1921 and ended, successfully, on July 5. A year later, part of Upper Silesia was formally incorporated into Poland.
Source: IAR, PAP