What challenges did nigeria faced after it gained its independence from britain

One of Nigeria's biggest problems is its lack of good leadership. Nigeria has barely managed to rule itself efficiently or achieve political stability since it gained independence 56 years ago. the Nigerian civil service has depreciated over the years and now riddled with corruption and ineptitude. Being so with Corruption, Impunity Leaders, Internal Strife, Worsening Economy, Administrative Inefficiency and Over Dependence on Oil.

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

dude you should crop your image so only the question shows. but   can you explain it better