<span>Afar, Amsterdam, Anahim, Ascension, Azores, Balleny, Bermuda, Bouvet, Bowie, Cameroon, Canary, Cape Verde, Caroline, Cobb, Comoros, Crozet, Darfur, Discovery, East Australia, Easter, Eifel, Fernando, Galápagos, Gough, Guadalupe, Hawaii, Heard, Hoggar, Iceland, Jan Mayen, Juan Fernandez, Kerguelen, Lord Howe, Louisville, Macdonald, Madeira, Marion, Marquesas, Meteor hotspot, New England, Pitcairn, Raton, Réunion, St. Helena, St. Paul, Samoa, San Felix, Shona, Society, Socorro, Tasmanid, Tibesti, Trindade, Tristan, Vema, Yellowstone.</span><span />
I assume that the question refers to the political affiliation of the Islands (They are Islands in the Mariana Trench, in the Pacific Ocean, south of Japan) - they are politically linked to the US - the correct answer is a). For example the Mariana islands have a commonwealth status within the US.
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.