Answer:
The correct answer is C) Colonial powers had acquired African territory by using methods such as annexation and overthrow.
Step-by-step explanation:
History has it that European countries rushed in to take over regions in Africa in order to gain strategic advantage globally.
History also has it that in 1870 only about 10% of Africa was under the formal control of Europeans. By 1914, this area had increased to approximately 1870.
For example, the Congo Free State was annexed in August 1908 and became known as the Belgian Congo.
Cheers