- ... that Maria Konopnicka's (pictured) poem Rota ("Oath") became so popular, it was seen as an unofficial anthem of Poland?
- ... that the personal union of Hungary and Poland fell apart due to the regent Elizabeth of Bosnia's reluctance to give up her grip on power by moving from Buda to Kraków, where she had no supporters?
- ... that the soldiers who enlisted in the Polish Armed Forces in the West during World War II were known as "Sikorski's tourists"?
- ... that the final conviction in the Chełmno Trials of the Chełmno extermination camp personnel was imposed in Poland 56 years after the war ended?