Final answer:
In 1913, European countries controlled most of the territory in Africa, as shown by the map and supported by historical evidence about the division of Africa during the Berlin Conference and the subsequent Scramble for Africa.
Step-by-step explanation:
The claim best supported by the evidence included in the map is: In 1913, European countries controlled most of the territory in Africa. European powers, during the Berlin Conference of 1884, agreed to divide the continent and establish colonial borders, which drastically changed Africa's political landscape. By 1900, European nations, fueled by the Scramble for Africa, had claimed about 90% of the continent, with the exception of the Kingdom of Ethiopia and Liberia, indicating large-scale control but not total control which discounts the claim that all of Africa was controlled by European powers. Moreover, the colonization was not consensual, as it involved conquest and subjugation, and there is no evidence provided by the map directly supporting the extent of railroad system developments in sub-Saharan Africa by 1913.