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Which terrorist group has claimed the most lives in Nigeria?

Between 2007 and 2019, Nigeria recorded 4,383 terrorist attacks, according to the Global Terrorism Index. Several militant groups are active in Nigeria, including Boko Haram. However, in recent years, counter-insurgency has significantly decreased Boko Haram’s activities, with the index recording only 64 attacks in 2021. Deaths dropped by 92% from 2,131 in 2015 to 178 in 2021. The decline of Boko Haram contributed to Nigeria recording the second largest reduction in deaths from terrorism in 2021, with the number falling by 47% to 448.

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