The United States was the last of the "Great Powers" to mobilize it's troops.
The alliance system was made up of two groups, the Central powers (Germany, Austria- Hungary, Italy(1914), and Turkey). The second group was the Allied powers (Russia, France, Great Britain, and United states).
Slavery was abolished by Victor Schœlcher .
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What's the question? There is no pic there. Do u mind attaching one?