The German minority of the Czech Republic, historically the largest minority of the country, was almost entirely removed when 3 million were forcibly expelled in 1945–6 on the basis of the Potsdam agreement. The constitution guarantees rights for minority languages, however there are 13 municipalities with German minority constituting 10% of population, which qualifies for such provisions. There is no bilingual education system in Western and Northern Bohemia, where the German minority is mostly concentrated. However, this is in large part due to the absence of German-speaking youth, a heritage of the post-war policy of the Communist government.