A) the number symbols and the decimal system for recording numbers like 2376.6
Answer:
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
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Learned from there mistakes and try to not repeat the same mistakes they've made
