 Complete the following phrase:  The region was part of Habsburg Galicia and was an ethnic mix of mainly Roman Catholic Poles, Greek Catholic Ruthenians, and Jews. Intermarriage between Poles and Ruthenians was common. Church of St. Mary of the Perpetual Assistance was consecrated in 1908 with its main tower reaching . In 1954 the church was blown up by Communist authorities and in its place was built the citys central supermarket. During World War I the city passed from German and Austrian forces to Russia several times. In 1917 the city and its castle were burnt down by fleeing Russian forces. After the dissolution of the Austro-Hungarian Empire, the city was proclaimed as part of the West Ukrainian Peoples Republic on 11 November 1918. After Polish forces captured Lwów during the 