https://poloniainstitute.net/competition-on-the-history-of-poland/2026-competition/2026-competition-announcement/2026-winners-of-pi-competiton-on-the-history-of-poland/ 2026-11-13T21:54:18Z Polonia Institute en 2026 Winners of PI Competiton on the History of Poland 2026-11-13T21:54:18Z Blog