One way a quadcopter is used today is to capture important events from above if you need a certain angle. Another way is to surveil areas,
Answer:
I believe its A
Explanation:
because it not specifically that. they went to war because the economy burdens, the feeling of being treated unfairly by the empire.
Europe maintained unity after the Roman Empire. 1 through The power of the Papacy and the Christian faith, and 2 Through Feudalism because even though it caused fractures in regions it offered a clear power structure that allowed Strong nations to bring their weaker neighbors under their direct control.