This is colonization by invitation

In the un-glorious past, European colonizers grabbed by force any African lands they had their eyes set on and did whatever they desired to do with the lands. Not only did they exploit the lands, but also the natives by paying them meagerly to till their own lost lands. Now it is a sort of neo-colonialism. At the root of the land grab lie global food shortage due to drought, population explosion, price hikes and lack of fertile, arable lands.
Read more: http://snapzu.com/Dino55/this-is-colonization-by-invitation