that began with independence in 1963. Many found their homes occupied – and because laws give ownership to anyone who has peacefully occupied land for at least 30 years, many refugees lost their homes and livelihoods. Experts fear the grievance could spark renewed conflict.

South Africa At the 1994 transition to democracy, the government planned to redistribute 30 percent of white-owned farms to blacks within 20 years. Transfers are behind schedule, and more than half have failed. After an outbreak of racial violence last year, observers fear the status quo – with expectations so high, progress so slow, and livelihoods at stake – is combustible.

Southern Sudan The 2005 peace agreement that ended a 20-year fight for the south didn't resolve tensions between the nation's two land systems. Private propertyreform implemented in the north was rejected in the south, which continues to use traditional rules. Danger of a potential clash between parallel systems is amplified by what's at stake: The south is oil-rich.

Uganda After 20 years of violence in the north, peace is bringing people home – and disputes are erupting over who owns property. Eighty percent of Ugandans have property claims based on the traditional land system, but a generation of conflict has weakened the traditional authority, of elders to resolve disputes or enforce land rules. As the government steps in to fill the power vacuum, experts fear a backlash.

Zambia White farmers forced off land in neighboring countries, found fertile soils here, and were initially welcomed by the government (five years ago). The tone changed as