This dependence on coffee has increased Burundi's vulnerability to seasonal yields and international coffee prices. Coffee is the largest state-owned enterprise. In recent years, the government has tried to attract private investment to this sector, with some success. Efforts to privatize other publicly held enterprises have stalled. Other principal exports include tea and raw cotton.
Little industry exists except the processing of agricultural exports.
Although potential wealth in petroleum, nickel, copper, and other natural resources is being explored, the uncertain security situation has prevented meaningful investor interest. Industrial development also is hampered by Burundi's distance from the sea and high transport costs. Lake Tanganyika remains an important trading point. The trade embargo, lifted in 1999, negatively impacted trade and industry. Since October 1993 the nation has suffered from massive ethnic-based violence which has resulted in the death of perhaps 250,000 persons and the displacement of about 800,000 others.