Trans-Siberian Railway as the Russo-Chinese part of the Trans-Siberian Railway, connecting Russia with China and providing a shorter route to Vladivostok. A Russian staff and administration based in Harbin operated it. Siberian agriculture began to send cheap grain westwards beginning around 1869. Agriculture in Central Russia was still under economic pressure after the end of serfdom, which was formally abolished in 1861. To defend the central territory and prevent possible social destabilisation, the Tsarist government introduced the Chelyabinsk tariff-break (Челябинский тарифный перелом) in 1896, a tariff barrier for grain passing through Chelyabinsk, and a similar barrier in Manchuria. This measure changed the
Trans-Siberian Railway with its Trans-Manchurian branch) served as the essential link between Germany and Japan. One commodity particularly essential for the German war effort was natural rubber, which Japan was able to source from South-East Asia (in particular, French Indochina). As of March 1941, 300 tonnes of this material would, on average, traverse the Trans-Siberian Railway every day on its way to Germany. According to one analysis of the natural rubber supply chain, as of 22 March 1941, 5,800 tonnes of this essential material were transiting on the Soviet railway network between the borders of Manchukuo and the Third Reich, 2,000 tonnes