The economy is predominantly rural and relies chiefly on subsistence farming. Idle land is now being utilised by rural communities practising subsistence farming. People typically live in villages that rely on subsistence farming. Most Koreans were peasants engaged in subsistence farming. Rural Tongans rely on both plantation and subsistence agriculture. The region did not have indigenous populations that practiced subsistence agriculture. Famine is often associated with subsistence agriculture. They survived by subsistence farming and periodic raids of plantations. Agriculture is generally otherwise limited to simple subsistence. The riparian and tributary environments were used for subsistence and irrigation farming. Tuvaluans are otherwise involved in traditional subsistence agriculture and fishing. Tanzania remains heavily agricultural, with 80% of the total population engaging in subsistence farming. The economy is based mostly on subsistence agriculture. Agriculture is primarily on the subsistence level. Many eked out a living via subsistence agriculture or fishing.