partially a reaction to the German claims and partially Polish nationalism, urging to exclude the German element. In turn, anti-Polish prejudice fueled German policy. Impact on the East Prussian plebiscite In the period leading up to the East Prussian plebiscite in July 1920, the Polish authorities tried to prevent traffic through the Corridor, interrupting postal, telegraphic and telephone communication. On March 10, 1920, the British representative on the Marienwerder Plebiscite Commission, H.D. Beaumont, wrote of numerous continuing difficulties being made by Polish officials and added "as a result, the ill-will between Polish and German nationalities and the irritation due to Polish intolerance towards the German inhabitants in the Corridor (now under their rule), far worse than any former German intolerance of the Poles, are growing to such an extent that it is impossible to believe the present settlement (borders) can have any chance of being permanent.... It can confidently be asserted that not even the most attractive economic advantages would induce any German to vote Polish. If the frontier is unsatisfactory now, it will be far more so when it has to be drawn on this side (of the river) with no natural line to follow, cutting off Germany from the river bank and within a mile or so of Marienwerder, which is certain to vote German. I know of no similar frontier created by any treaty." Impact on German through-traffic The German Ministry for Transport established the Seedienst Ostpreußen ("Sea Service East Prussia") in 1922 to provide a ferry connection to East Prussia, now a German exclave, so that it would be less dependent on transit through Polish territory. Connections by train were also possible by "sealing" the carriages (Korridorzug), i.e. passengers were not forced to apply for an official Polish visa in their passport; however, the rigorous inspections by the Polish authorities before and after the sealing were strongly feared by the passengers. In May 1925 a train, passing through the Corridor on its way to East Prussia, crashed because the spikes had been removed from the tracks for a short distance and the fishplates unbolted. 25 persons, including 12 women and 2 children, were killed, some 30 others were injured. Land reform of 1925 According to Polish Historian Andrzej Chwalba, during the rule of the Kingdom of Prussia and the German Empire various means were used to increase the amount of land owned by Germans at the