Answer:
A regular decagon has 10 reflectional symmetries.
A regular decagon is a two-dimensional shape that has 10 sides of equal length
Yessss I'm great at geography... what grade level?
Gypsum is a chemical sedimentary rock.
Answer: In Medieval Europe, knights pledged loyalty to vassals, who in turn pledged theirs to powerful lords, and serfs labored in the fields.
Explanation:
A rigid hierarchy refers to one where people who are born into a certain position in life, find it quite hard to move from it or rather one where there are different social classes and people had to be classified in one class for the system to work.
The system during medieval times was much like this. Social classes existed that determined a person's worth in society such as the knights, vassals, Lords and Royals. There was also the serfs who were considered the lowest in the hierarchy.
I think the correct answer from the choices listed above is option C. It is the Amazon river that can swell to over 30 miles wide during its annual flooding season. <span>The </span>Amazon River<span> in South America is the largest river by discharge of water in the world and the longest.</span>
