<span>The correct answers are 1)C The medieval era was the age of feudalism, a system that was already declining after the Black Death, but was rapidly being removed after this War (leading to the supremacy of royalty and more "democratic" tendencies); 2)A The Medieval Age was focused on the Church's/Pope's huge and unquestioned influence (on par with the kings' power at the time); answers b. and. c. are almost senseless regarding the quesiton itself, D. led the way to Protestantism and other religious branches, but it was the self-awareness that people acquired, that mainly led to the end of Medieval Era.</span>
Collateral. You can borrow money against a house or car, but if you default and don't pay it back you will lose the house or car, or whatever you used as collateral.
The answer to your question is C.