Answer:
D) They lost it all as a result of fighting two world wars during the first half of the 20th century.
Step-by-step explanation:
At the expense of the African people, Britain, Germany and France seized and exploited Africa's resources throughout the 19th century, and these countries became very wealthy as a result. However, all of this wealth was lost during World War I and World War II when all three countries spent their treasuries on weapons, supplies and (for Germany) post-war payments to the European countries they destroyed. (Also, I took the quiz :))