Answer: Primary Source
Explanation: If Sequoyah himself actually wrote about his experience, it's a firsthand account. However, if a textbook wrote about how he created the alphabet, it would be a secondhand source.
Answer: Scholars questioned whether the Earth or Sun was at the center of the solar system, why things fall down instead up, how the human body works, and many other topics in astronomy, anatomy, mathematics, biology, chemistry, and physics.
Answer:
Musa I, llamado igualmente Musa I de Malí y conocido comúnmente como Mansa Musa, fue el décimo mansa, traducido como "rey de reyes" o "emperador", del Imperio de Malí
Explanation: