We don't have the global resources or time to support mass industrialisation of Africa (1 billion people projected to go to 4 billion by 2100).
Its unclear if that's even possible given that some of these societies face serious issues in terms of equality for women, value of education, fair application of law, systematic corruption and tribalism, etc. Many of these problems are imbued in the religious/cultural bedrock of those places.
Look at what has happened in Afghanistan where after 20 years of Western intervention, the country has reset to its 'default' almost overnight.
We should view the level of development in Europe, NA, East Asia as the exception to the human condition, not the norm.
We need to just skip to the end game: education for women, contraception, abortion, incentives for having zero/one child, no food aid.