Demonstration on the occasion of the referendum in Upper Silesia, 1921 (b/w photo)

Germany eligible voters advocate with placards bearing the inscription 'Vote German!' for the remain of Upper Silesia in the German Reich. In accordance with the mandate of the article 88 of the Treaty of Versailles on 20 March 1921 took place a plebiscite on the national affiliation of the area of the German province of Upper Silesia, which was subordinated to the League of Nations after the First World War. The voting yielded a favorable result for Germany: almost 60 percent of the population voted to remain part of the German Reich and against the annexation to the Republic of Poland.