50 deaths In Octoberprovoke50 deaths In October

to the lack of peace and harmonyhas ledto the lack of peace and harmony

the political problems(passive) caused bythe political problems

12th in world oil production , 11th in reservescauses12th in world oil production , 11th in reserves

every problem(passive) caused byevery problem

in considerable loss of liferesultedin considerable loss of life

Italy 's Agip to declare " force majeure , " on its exports of oil out of Nigeria , meaning that it ca n't meet its export commitments as ethnic conflicts have disrupted operationscausedItaly 's Agip to declare " force majeure , " on its exports of oil out of Nigeria , meaning that it ca n't meet its export commitments as ethnic conflicts have disrupted operations

frequentlyhas ... causedfrequently

to a significant amount of operations being shut down in the country 's western deltahas ledto a significant amount of operations being shut down in the country 's western delta

to the loss of some 40 percent of the country 's productionleadingto the loss of some 40 percent of the country 's production

oil companies in the area to shut down around 800,000 barrels in daily oil production -- 40 percent of Nigeria 's normal total of 2 million barrels a dayhave ledoil companies in the area to shut down around 800,000 barrels in daily oil production -- 40 percent of Nigeria 's normal total of 2 million barrels a day