During the nineteenth century, Factory workers had it quite hard. The conditions were unbearable and are very dangerous. With dangerous vapor zooming around filling their lungs with dangerous chemicals. The eqiupment was most of the time dangerous and broken, which usally led to deaths.
The answer to your question is number 4
One common social structure among ethnic groups in sub-Saharan Africa is segmentary lineage organisation. Segmentary lineage societies are characterised by the foremost importance of kin relationships in determining individuals' social and political allegiances, as well as their patterns of residence.
Economic factors , nationalist factors
