Final answer:
The cause for imperialism evident in the map of Africa is the European scramble for colonies during the Age of Exploration, with examples of brutal exploitation and the Berlin Conference as influential factors.
Step-by-step explanation:
The cause for imperialism evident in the map of Africa is the European scramble for colonies during the Age of Exploration. European powers, such as Belgium, France, and Britain, sought to expand their influence and gain control over African territories for economic and strategic purposes.
For example, King Leopold II of Belgium brutally exploited the resources of the Congo, forcing the local population into labor and subjecting them to violence. The Berlin Conference in 1884-1885 further legitimized European colonization in Africa, resulting in the division of the continent among European powers.