It's the deal of the century: £150 a week to lease more than 2,500 sq km (1,000 sq miles) of virgin, fertile land – an area the size of Dorset – for 50 years. ... Gambella has offered investors 1.1 million hectares, nearly a quarter of its best farmland, and 896 companies have come to the region in the last three years. They range from Saudi billionaire Al Amoudi, who is constructing a 20-mile