Answer:
1) Military: domination: the line was built to exercise ‘effective control’ in the Scramble for Africa, or to dispatch troops for better control of the native population;
2) Mining: the line was built into the interior to further European mining interests, and;
3) Cash crops: the colonial power built the line to connect agriculturally rich areas. With limited budgets, colonisers expected the railroads to pay for themselves, hence they connected areas of high economic potential.
Step-by-step explanation:
History :D