Answer:
I would choose d thats just me you don't have to believe me
<span>The correct answer for 1 is perform military services. Vassals would have to fight wars for you and help you when it came to defending from others. The answer for 2 is It strengthened the idea that a monarch's power was limited, not absolute. They did it by giving more freedoms to the nobles who could now avoid being prosecuted if they disobeyed the king. The correct answer for 3 is Holy Roman Empire. Frederick I Barbarossa was the first Holy Roman Empire. It wasn't the entire Italy but rather the northern parts of it.</span>
It eliminates the aspect of it being hereditary. So, you won't automatically get it because of your relation to the previous worker.
Hope this helped(:
organizations create camps to assist people affected by instability.