Colonial endeavors refer to the activities and efforts made by European powers to establish and expand territories outside of Europe, primarily from the 15th to the 20th centuries. These endeavors were driven by a mix of economic interests, political ambitions, and the desire for prestige, leading to the establishment of colonies across Africa, Asia, and the Americas. The competition for colonial possessions resulted in rivalries among European nations, which played a significant role in shaping international relations and conflicts during this era.