18th Century, Tokaj reached the height of its prosperity. Both Poland and Russia had become major export markets for its wine. Such was the importance of Tokaji in Russia, that the Russian emperors maintained a de facto colony in Tokaj in order to guarantee the supply of wine to the Imperial Court. The partition of Poland in 1795 and subsequent imposition of customs duties dealt a severe blow to the exports of Tokaji wine and precipitated the economic decline of the region. However, this was only the first of three major crises for Tokaj. The second occurred when the phylloxera epidemic reached Tokaj in 1885 and destroyed the vast majority of the vineyards in a matter of years. The third shock was when Hungary lost two-thirds of its territory under the peace Treaty of Trianon signed in June 1920, and thus Tokaj wine lost access to the majority of its domestic market. The region was also divided between Hungary and the newly created Czechoslovakia, which gained an area of 120 hectares (with the exception of 1938-1944, when Hungary took control over the territory). The latter now forms part of an adjoining wine region in Slovakia with approximately 908 hectares of classified Tokaj vineyards. The era of communist rule in Hungary saw a deterioration in the quality and reputation of Tokaji wines. However, since 1990 a considerable amount of investment has gone into the Tokaj region, creating what has been dubbed as the "Tokaj Renaissance". There are now almost 600 wineries in the region, of which about 50 produce the full range of wines. The "Designation of origin" dispute Tokaj wine is, by its unique character, a luxurious commodity with a strong appeal to the international market. The dispute started in 1964 when, for the first time, the then Czechoslovakia exported its excessive production of Tokaj wine to Austria, the market that used to be solely supplied with this commodity by Hungary. The conflict of interests was settled in a bilateral agreement according to which Slovakia - at the expense of the Czech beer-related concession on Hungarian part - was only allowed to export its overproduction of Tokaj wine to Hungary (which consequently re-labeled and re-exported it). This agreement expired in 1990 after which date the dispute arose again. An agreement was reached in June 2004 between the Hungarian and Slovak governments concerning the use of the Tokaj name in Slovakia.