Answer:
Leading countries of Europe throughout the late 1800s to the early 1900s were competing for the supremacy of the possession of colonies in other places around the world. Colonies were sources of natural and energetic resources and after time, these resources began to become scarce in Europe due to the expansion of urban metropolises. The rise of nationalism was the other detonator for interregional competitions because after the French Revolution and emergence of big cities, most European dynasties and royal families were down at heel or even in danger of extinction.