Poland finally regained independence in 1918, after World War I. In the Second Polish Republic, Sosnowiec became part of the Kielce Voivodeship, and in 1934 the City County of Sosnowiec was established. Sosnowiec suffered war damages during both major military conflicts in the 20th century: World War I, which caused mainly destruction to industry, and World War II, which brought about the terror of executions.
Poland finally regained independence in 1918, after World War I. In the Second Polish Republic, Sosnowiec became part of the Kielce Voi?vodeship, and in 1934 the City County of Sosnowiec was established. Sosnowiec suffered war damages during both major military conflicts in the 20th century: Wo?rld War ,I, which caused mainly destruction to industry, and World War II, which brought about the terror of executions.