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.
Less dense then water its self
Answer:
Distance to Neptune at the farthest < distance to the star Betelgeuse < distance to the star VY Canis Majoris < distance to the galaxy Large Magellanic Cloud
Explanation:
Firstly, we need to work with the same units in order to make the comparison among the given distances. So, let's work with kilometers (
):
distance to the star Betelgeuse: 640 ly
distance to the star VY Canis Majoris: 3.09 × 108 AU

distance to the galaxy Large Magellanic Cloud: 49976 pc
distance to Neptune at the farthest: 4.7 billion km

Now that we have all the distances in kilometers we can compare and arrange them in order from least to greatest:
Distance to Neptune at the farthest: 
Distance to the star Betelgeuse:
Distance to the star VY Canis Majoris: 
Distance to the galaxy Large Magellanic Cloud:
Hachured contour lines on a topographic map represent closed depression or Basin.