Why did Mansa Musa bring so many powerful people with him on his trip?

What would a student most likely use if he or she wanted to consult a secondary source

Opinion polls reveal that many people believe that the military buildup of the 1980s came at the expense of pressing domestic problems such as environmental pollution and deteriorating educational and transportation infrastructure. in short, people are becoming aware of

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?