Answer:
C. constant European competition for imperial possessions
Explanation:
The rise in fossil fuel energies consumption is what enable industrialization to happen across the globe. This enable people to mass produce different varieties of product like never before;
This mass production led to the increasing needs of materials for the productions. So, European countries sent their military's all across the world in order to seek possession of natural resources. These European countries often engaged in conflict with one another to conflict in order to gain control in those foreign territories.