It's good to be passionate.
And if the governments weren't there, it would be possible for people to expand outward from the smaller countries, rather than try to fit twice as many people within the same invisible, ambiguous border.
Also, Africa wouldn't just grow "some" crops. It's all (except the two deserts) very fertile land, thus all the jungle. Prime real estate, really.
But those deserts are ****ing huge! And water would be an issue. Well, it would be a bigger issue than it already is.
This is starting to hurt my brain. I think I'm down for the night.