Which of these events occurred first? the fall of the songhai empire the fall of the mali empire the introduction of islam into west africa the entrance of portuguese explorers into african territory

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

answer-the island had airfields that the u.s. military needed.