Russia had a special ethnic tie with Serbia because both countries had Slavic populations. Austria Hungary declared war on Serbia and July 1914. Use the map to explain how this could lead to widespread war

The reason this could lead to war is that the Russians were part of an alliance that opposed the alliance of Austria Hungary.
When Austria-Hungary went to war and invaded Serbia, Russia then attacked them. This led to Germany attacking Russia which then drew Britain and France into the war thereby beginning WWI.
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