It isn't strange that Poland wasn't affected by Black Death. King Casimir the Great have introduced sanitary cordon and quarantined cross-border travelers. htt

It isn't strange that Poland wasn't affected by Black Death. King Casimir the Great have introduced sanitary cordon and quarantined cross-border travelers. https://history.stackexchange.com/questions/16699/why-was-poland-spared-from-the-black-death https://history.stackexchange.com/questions/16699/why-was-po...