Changes

Nationalism and ethnic tensions between Germans and Slavs were the basic reasons that the war was fought.  Religious affiliations (Roman Catholic, Protestant, Eastern Orthodox, Muslim) overlapped language to produce closed ethnic communities which were highly motivated to fight their traditional enemies. Typically, each ethnic group dominated a central homeland, which had minorities, and also claimed a larger territory. Some claims were centuries old, others were new; they all overlapped. The incantation "it's ours because we were here first" cast a spell on otherwise peaceful peoples and guaranteed perpetual hostility.  

Nationalism and ethnic tensions between Germans and Slavs were the basic reasons that the war was fought.  Religious affiliations (Roman Catholic, Protestant, Eastern Orthodox, Muslim) overlapped language to produce closed ethnic communities which were highly motivated to fight their traditional enemies. Typically, each ethnic group dominated a central homeland, which had minorities, and also claimed a larger territory. Some claims were centuries old, others were new; they all overlapped. The incantation "it's ours because we were here first" cast a spell on otherwise peaceful peoples and guaranteed perpetual hostility.  

For 800 years the Germans had been moving east in Europe, pushing out the Slavs. Wealth was based on agriculture, so possession of land was decisive.  Germany had been unified from Prussia and numerous smaller countries in 1870, and rapidly built a powerful industrial economy with a strong agricultural base. Active imperialism led to the acquisition of numerous colonies in Africa and the Pacific, such as New Guinea. None of the colonies were profitable, but now Germany had a world empire. German’s main rival was Britain, with a smaller home population and a much larger empire, well protected by the world's strongest navy. By 1914 under the leadership of Admiral Alfred von Tirpitz, Germany had a good fleet, but the Royal Navy remained well ahead in sea power. The naval race heightened rivalries between the two powers, but did not itself cause the war.  

For 800 years the Germans had been moving towards the Slavic parts of Central Europe in Europe, attempting to push out the Slavs. Wealth was based on agriculture, so possession of land was decisive.  Germany had been unified from Prussia and numerous smaller countries in 1870, and rapidly built a powerful industrial economy with a strong agricultural base. Active imperialism led to the acquisition of numerous colonies in Africa and the Pacific, such as New Guinea. None of the colonies were profitable, but now Germany had a world empire. German’s main rival was Britain, with a smaller home population and a much larger empire, well protected by the world's strongest navy. By 1914 under the leadership of Admiral Alfred von Tirpitz, Germany had a good fleet, but the Royal Navy remained well ahead in sea power. The naval race heightened rivalries between the two powers, but did not itself cause the war.  

After 1900 the Slavs--led by huge Russia and little Serbia-- were fighting back. Militant Pan-Slavic ideology demanded that oppressive German, Hungarian and Ottoman rule be overthrown, so that the Slavs could have their own nation states. Trouble flared in the Balkans, where two recent wars had revealed a propensity to use violence as a first remedy. <ref> The term "Slavic" refers to languages, and by extension to the corresponding ethnic groups. The main Slavic languages were Russian, Ukrainian, Polish, Serbo-Croatian, Czech, Slovak, and Bulgarian. Note that the Albanians, Estonians, Finns, Germans, Greeks, Hungarians, Italians, Jews, Latvians, Lithuanians, Romanians and Turks who also lived in east Europe did not consider themselves Slavic.</ref>  Belgrade (the capital of Serbia) promoted unrest among Serbs in nearby Bosnia-Herzegovina, a multi-ethnic region that the Austro-Hungarian Empire had recently taken from Turkey and now planned to incorporate. The imperial capital, Vienna, was increasingly nervous that unrest among the various minority groups would lead to the breakup of its empire. The only way to keep control was to aggressively suppress nationalist uprisings and stop outsiders from inciting rebellion. On June 28, 1914, Archduke Ferdinand, heir to the throne, visited Bosnia to legitimize his Empire's claim to that province and upgrade its status. In Sarajevo a team of Bosnian Serbs assassinated him and his wife.<ref> The assassination was planned in Serbia with the assistance of Serbian mid-level military and government officials, but not the government itself. Bosnia receded into the background in 1914, only to reappear center stage 79 years later. In 1993 the powers issued an ultimatum to Belgrade ordering it to stop helping the Bosnian Serbs, who were engaged in "ethnic cleansing" against Bosnian Muslims</ref>

After 1900 the Slavs--led by huge Russia and little Serbia-- were fighting back. Militant Pan-Slavic ideology demanded that oppressive German, Hungarian and Ottoman rule be overthrown, so that the Slavs could have their own nation states. Trouble flared in the Balkans, where two recent wars had revealed a propensity to use violence as a first remedy. <ref> The term "Slavic" refers to languages, and by extension to the corresponding ethnic groups. The main Slavic languages were Russian, Ukrainian, Polish, Serbo-Croatian, Czech, Slovak, and Bulgarian. Note that the Albanians, Estonians, Finns, Germans, Greeks, Hungarians, Italians, Jews, Latvians, Lithuanians, Romanians and Turks who also lived in Central Europe did not consider themselves Slavic, because their languages were distinctively different.</ref>  Belgrade (the capital of Serbia) promoted unrest among Serbs in nearby Bosnia-Herzegovina, a multi-ethnic region that the Austro-Hungarian Empire had recently taken from Turkey and now planned to incorporate. The imperial capital, Vienna, was increasingly nervous that unrest among the various minority groups would lead to the breakup of its empire. The only way to keep control was to aggressively suppress nationalist uprisings and stop outsiders from inciting rebellion. On June 28, 1914, Archduke Ferdinand, heir to the throne, visited Bosnia to legitimize his Empire's claim to that province and upgrade its status. In Sarajevo a team of Bosnian Serbs assassinated him and his wife.<ref> The assassination was planned in Serbia with the assistance of Serbian mid-level military and government officials, but not the government itself. Bosnia receded into the background in 1914, only to reappear center stage 79 years later. In 1993 the powers issued an ultimatum to Belgrade ordering it to stop helping the Bosnian Serbs, who were engaged in "ethnic cleansing" against Bosnian Muslims</ref>

===Alliances and Escalation===

===Alliances and Escalation===