Nigeria is in the middle of a crisis at the moment, that is causing even the biggest multinational companies to abandon the country. As always it is usually the government in power that is heading the wrong way, it's often towards more persecution or pointing blame at overseas entities as a way to divert blame from their own ineptitude. Companies need a secure environment to operate consistently and they don't want to keep all their profits fixed in one country, so things like capital controls are bad news but one thing that a government will go for in order to raise short term capital and it looks good through election cycles.
The political situation and government policy that are in power can also trigger a messy economy. When the global economic situation is chaotic due to world war and is exacerbated by an extreme climate, the government is unable to control the economy and domestic conditions. At such conditions the government must be able to make policies that can help its citizens and also be able to protect foreign investors. When the poor economy that leads to the crisis even threatens the hunger of its citizens, the head of government must be responsible for the sovereignty of his country.