Good question. Julian Whitcrosse writes at io9.com:
Hundreds of years ago, European colonists took possession of much of the surface of our planet through unsubtle means: murder, subjugation, and their special move, bringing horrific new diseases. Nowadays, the wealthy and powerful expand their domains less confrontationally, but the effects can still be pretty harmful. Interests in rich countries — mainly multinational corporations (MNCs) make deals with local governments to attain land for their own big-money projects, sometimes evicting locals from their traditional homes and farmland, and contributing to food insecurity. Over the past 10 years, almost 800,000 square miles of land has been bought or leased (eight times the size of Britain), mostly in Asia and Africa….