Answer: b
Explanation: without planes they wouldve never wouldve known how space looked like up close
Answer:
Pope Leo III's crowning of Charlemagne in 800 AD was significant because it gave papal legitimacy to Charlemagne's new role as emperor.
Explanation:
comment if it helps
Answer:Anarchy
Explanation:
Anarchy is where there is no government, and chaos resumes.
