What ethnic population was brutally killed because of the nationalism and prejudice of the young turks?

The ethnic population that was brutally killed due to the nationalism and prejudice of the young turks was the Armenians, because towards April 24, 1915, the Ottoman Empire in Turkey decided to extermine 1.500.000 Armenians, that majorly lived inside the Ottoman Empire. That Genocide was carried out during and after the World War I, and was caused by the Ottoman Authorities and young turks prejudices against Armenians, where to justify the massacre of 1915, they invented a year before that the Armenians who lived in the empire were a danger and a threat to the security of the empire, so that prejudgements were the main aspect that induced the brutal killing of the Armenians.

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explanation:

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69