Canals cut the cost of transporting materials, improved railroads which helped the movement of heavy wagons, railroads linked manufacturing cities with different materials.
The Scientific Revolution was a series of events that marked the emergence of modern science during the early modern period, when developments in mathematics, physics, astronomy, biology (including human anatomy) and chemistry transformed the views of society about nature.
Many conflicts in Sub-Saharan Africa resulted from the way the European colonists used imperialism to conquer territories. At this time, European states also engaged in what is now referred to as the "Scramble for Africa" where they met together in the Berlin Conference and decided how to split up Africa between the European states. Of course, the African people didn't have any say in this and many tribes and cultures were forced together or separated by these new divides. A lot of conflict arose from these new forced boundaries and European imperialist rule.
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Increased weaponry and military spending