Economics and development
Chad came out of the colonial period with very little infrastructure and much of what there was damaged or destroyed in the wars of 1970s and 1980s. Now that Chad is an oil producer there are signs everywhere of new development - new roads, schools, hospitals, universities and so on.
The state is the biggest employer.
Many people live from subsistence farming and herding. This makes them very vulnerable to variations in rainfall.
Mobile phone technology is revolutionising communications and wasy of doing business.