Washington D.C. was a political city.
I believe that the answer should be c
Answer: The importance of Timbuktu to African heritage is priceless due to its historic position in West Africa as a major economic city during the 15th and 16th centuries. It is also considered an important city for the spread of Islam in Africa, due to the efforts of the prestigious Koranic University of Sankore
The answer is D, it helped unify the colonists to fight the war.
