Which is the question please?
Trench Warfare was a form of military conflict in which opposing sides fought one another from trenches facing one another. WW1 warfare introduced the first large-scale use of chemical weapons as well as bringing in airplanes and tanks for the first time.
Because Africa was considered to be a poor in terms of natural resources that could be eploxited and also because of the unhospitable climate compared to the other continents.
Line agencies, whether in public administration, The military or various businesses, are those departments within an organization which focus on the primary function and work of the organization, who's staff agencies are those departments which provide support to line agencies. In business, production, sales and marketing are the key line agencies and departments.
