After World War I, Ukrainian Greek Catholics found themselves under the governance of the nations of Poland, Hungary, Romania and Czechoslovakia. Under the previous century of Austrian rule, the Ukrainian Greek Catholic Church attained such a strong Ukrainian national character that in interwar Poland, the Greek Catholics of Galicia were seen by the nationalist Polish and Catholic state as even less patriotic than the Orthodox Volhynians. Extending its Polonization policies to its Eastern Territories, the Polish authorities sought to weaken the UGCC. In 1924, following a visit with Ukrainian Catholic believers in North America and western Europe, the head of the UGCC was initially denied reentry to Lwów (the Polish name at the time for Lviv), only being allowed back after a considerable delay. Polish Catholic priests, led by their Latin bishops, began missionary work among Greek Catholics; and administrative restrictions were placed on the Ukrainian Greek Catholic Church.