Final answer:
The late nineteenth and early twentieth centuries of European imperialism resulted in industrial expansion for empires and exploitation for colonies, with long-lasting impacts on territory, culture, economy, and international relations.
Step-by-step explanation:
The main consequences of European imperialism during the late nineteenth and early twentieth centuries were multifaceted, impacting both empires and their colonies. For empires like Britain, Germany, and the United States, imperialism facilitated industrial expansion and global dominance through control of trade routes and exploitation of natural resources such as diamonds, gold, and oil. Colonies established in Asia and Africa faced profound changes including the imposition of arbitrary borders, exploitation of labor and resources, and entrenched ethnic tensions as a result of imperialist policies.Within the colonies, European nations introduced borders that disrupted traditional territories and cultures, exploiting local populations and resources. This created long-standing issues, such as ethnic conflicts and economic dependence, which persisted long after these territories gained independence. Economic neo-imperialism also took hold, with European powers maintaining financial control over newly independent nations, ensuring a continued flow of raw materials at the expense of local development.In summary, imperialism led to the establishment of European and American empires with significant economic gains for the imperial powers but resulted in territorial divisions, exploitation, and long-standing conflicts in the colonized regions. The effects of these imperialistic endeavors are still evident in present-day international relations, economic interactions, and national boundaries.