nternationally recognised when the Council of Ambassadors ultimately approved it in March 1923.
Interbellum period
In the interbellum period Lviv held the rank of Poland's third most populous city (after Warsaw and ?�d?) and became the seat of the Lw�w Voivodeship. Right after Warsaw, it was the second most important cultural and academic centre of interwar Poland. In the academic year 1937�38 there were 9,100 students attending 5 higher education facilities including the renowned university and institute of technology. In 1920 professor Rudolf Weigl of the Lw�w University discovered the vaccine against typhus. The major trade fair called Targi Wschodnie was established 1921. Its geographic location gave it an important role in stimulating international trade and fostering city's and Poland's economic development.
While the eastern part of the Lw�w Voivodeship had a relative Ukrainian majority in most of the rural areas the city itself did not (see table to the right). Prewar Lviv had also a large and thriving Jewish population. The Polish inhabitants of the city spoke the characteristic Lw�w dialect.
Although Polish authorities obliged themselves internationally to provide Eastern Galicia with an autonomy (including a creation of a separate Ukrainian university in Lviv) and even though in September 1922 adequate Polish Sejm's Bill was enacted, it was not fulfilled. Instead, the Polish government closed down many Ukrainian schools that had previously flourished during Austrian rule and closed down every Ukrainian university department at the University of Lviv with the exception of one. Unlike in Austrian times, when the size and amount of public parades or other cultural expressions corresponded to each cultural group's relative population, the Polish government emphasized the Polish nature of the city and limited public displays of Jewish and Ukrainian culture. Military parades and commemorations of battles at particular streets
