Under feudalism, lords were responsible for ruling different regions of a country.
These regions were given as a fief to the Lord by the King or a higher rank Lord in return for their loyalty and service.
Depending on the kingdom, this alliance between the King and his vassal could be inherited. If the king needed so, the Lord had to pay service of arms, gathering knights and soldiers for war. They also had to protect the land given and the people living in it for the King.
This was necessary for kings in Middle Ages because they didn’t have enough power and an army to protect their realms from invasions and raids. Lords were the ones who had private armies, so they could actually protect the country. This is why they became responsible for ruling different regions.
You can learn more about feudalism in the link below:
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The correct answer is this - <span>this research would not require IRB review because it would be eligible for exemption since the researcher is not interacting with the children and the playground is a public setting.
If the conditions were a little bit different, then his IRB review would also require different results. However, since there is no real interaction with the children, but rather only observation, an IRB review is not necessary in this case and can be avoided.
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