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2009 July - Hundreds die in northeastern Nigeria after the Boko Haram Islamist movement launches an enduring campaign of violence.

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2009 July - Hundreds die in northeastern Nigeria after the Boko Haram Islamist movement launches an enduring campaign of violence.

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2010 May - President Umaru Yar'Adua dies after a long illness. Vice-President Goodluck Jonathan, already acting in Yar'Adua's stead, succeeds him.

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2010 May - President Umaru Yar'Adua dies after a long illness. Vice-President Goodluck Jonathan, already acting in Yar'Adua's stead, succeeds him.

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2011 March - Vice-President Goodluck Jonathan wins presidential elections.

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2011 March - Vice-President Goodluck Jonathan wins presidential elections.

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2012 January - More than 100 killed in single day of co-ordinated bombings and shootings in Kano, shortly after Boko Haram tells Christians to quit the north.

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2012 January - More than 100 killed in single day of co-ordinated bombings and shootings in Kano, shortly after Boko Haram tells Christians to quit the north.

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2013 May - Government declares state of emergency in three northern states of Yobe, Borno and Adamawa and sends in troops to combat Boko Haram.

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2013 May - Government declares state of emergency in three northern states of Yobe, Borno and Adamawa and sends in troops to combat Boko Haram.

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2014 April - Boko Haram kidnaps more than 200 girls from a boarding school in northern town of Chibok, in an incident that draws major national and international outrage.

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2014 April - Boko Haram kidnaps more than 200 girls from a boarding school in northern town of Chibok, in an incident that draws major national and international outrage.

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2014 November - Boko Haram launches a series of attacks in northeastern Nigeria, capturing several towns near Lake Chad and running raids into neighbouring Chad and Cameroon in early 2015. It switches allegiance from al-Qaeda to the Islamic State group.

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2014 November - Boko Haram launches a series of attacks in northeastern Nigeria, capturing several towns near Lake Chad and running raids into neighbouring Chad and Cameroon in early 2015. It switches allegiance from al-Qaeda to the Islamic State group.

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2015 February-March - Nigeria, Chad, Cameroon and Niger form military coalition and push Boko Haram out of all towns back into Sambisa Forest.

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2015 February-March - Nigeria, Chad, Cameroon and Niger form military coalition and push Boko Haram out of all towns back into Sambisa Forest.

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2015 March - Muhammadu Buhari wins the presidential election, becoming the first opposition candidate to do so in Nigeria's history.

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2015 March - Muhammadu Buhari wins the presidential election, becoming the first opposition candidate to do so in Nigeria's history.

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2016 June - Naira currency floated in attempt to stave off financial crisis caused by low oil prices.

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2016 June - Naira currency floated in attempt to stave off financial crisis caused by low oil prices.

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2016 November - Niger Delta Avengers rebels bomb three oil pipelines in attempt to renew southern insurgency.

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2016 November - Niger Delta Avengers rebels bomb three oil pipelines in attempt to renew southern insurgency.

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2017 December - Clashes between herders in Benue and Taraba states prompt thousands to flee.

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2017 December - Clashes between herders in Benue and Taraba states prompt thousands to flee.

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2018 - Escalating attacks by Boko Haram from August onwards, targeting army bases.

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2018 - Escalating attacks by Boko Haram from August onwards, targeting army bases.

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2019 February - Presidential elections held after last-minute delay of a week.

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2019 February - Presidential elections held after last-minute delay of a week.

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2019 president of Nigeria, Muhammadu Buhari claimed that Boko Haram was "technically defeated"

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2019 president of Nigeria, Muhammadu Buhari claimed that Boko Haram was "technically defeated"

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2020 Boko Haram kidnaps over 300 school boys

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2020 Boko Haram kidnaps over 300 school boys