were marked by social unrest, high unemployment, and strikes. In several instances, the Romanian government violently repressed strikes and riots, notably the 1929 miners' strike in Valea Jiului and the strike in the Grivița railroad workshops. In the mid-1930s, the Romanian economy recovered and the industry grew significantly, although about 80% of Romanians were still employed in agriculture. French economic and political influence was predominant in the early 1920s but then Germany became more dominant, especially in the 1930s. In the Albanian Kingdom, Zog I introduced new civil codes, constitutional changes and attempted land reforms, the latter which was largely unsuccessful due to the inadequacy of the country's banking system that could not deal with advanced reformist transactions. Albania's reliance on Italy also grew as Italians exercised control over nearly every Albanian official through money and patronage, breeding a colonial-like mentality. Ethnic integration and assimilation was a major problem faced by the newly formed post-World War I Balkan states, which were compounded by historical differences. In the Kingdom of Yugoslavia for instance, its most influential element was the pre-war Kingdom of Serbia but also integrated states like Slovenia and Croatia, which were part of Austria-Hungary. With new territories came varying legal systems, social structures and political structures. Social and economic development rates also varied as for example Slovenia and Croatia was far more advanced economically than Kosovo and Macedonia. Redistribution of land led to social instability, with estate seizures generally benefiting Slavic Christians. China Japanese dominance in East Asia The Japanese modelled their industrial economy closely on the most advanced Western European models. They started with textiles, railways, and shipping, expanding to electricity and machinery. The most serious weakness was a shortage of raw materials. Industry ran short of copper, and coal became a net importer. A deep flaw in the aggressive military strategy was a heavy dependence on imports including 100 percent of the aluminium, 85 percent of the iron ore, and especially 79 percent of the oil supplies. It was one thing to go to war with China or Russia, but quite another to be in conflict with the key suppliers, especially the United States, Britain, and the Netherlands, of oil and iron. Japan joined the Allies of the First World War to make territorial gains. Together with the British Empire, it divided up Germany's territories scattered in the Pacific and on the Chinese coast; they did not