This perhaps happened most clearly during the Congress of Gniezno (11 March 1000), which resulted in the establishment of a Polish church structure with a Metropolitan See at Gniezno.
Hal ini mungkin terjadi paling jelas selama Kongres Gniezno (11 Maret 1000), yang berakibat pembentukan struktur gereja Polandia dengan sebuah Tahta Metropolis di Gniezno.