Here are the correct answers to your questions:
Question 1: Traders carrying goods between the Ghana Empire and North Africa were forced to cross which obstacle?
Answer: the Sahara Desert
Question 2: How were the ancient African kingdoms of Ghana and Mali similar?
Answer: Both became rich through trade in gold and salt.
Question 3: What led to the development of the Swahili language in Africa?
Answer: the blending of indigenous and Arab cultures through trade over the Indian Ocean
Question 4: What contributed to the growth of major cities in the Sahel, such as Timbuktu, between the tenth and fifteenth centuries?
Answer: the region's location between traders in North Africa and sub-Saharan Africa
Question 5: Which of the following is a result of the inability of Muslim forces to conquer Axum?
Answer: Present-day Ethiopia is a Christian country.
Question 6: What was the basis of many indigenous religions in sub-Saharan Africa?
Answer: animism
Feel free to ask if you have any other questions!