It emphasizes how severely the bubonic plague affected people and how quickly it killed them. ... It suggests that Europe could have easily avoided the plague if they had not let the ship in to the port.
B) a severe economic recession
To me, this rule means to never let anyone get you down. Always believe the best in yourself no matter what others think. This rule means that others options of myself dont matter, because the only way I can succeed is if I believe in myself. So this rule is important because it helps me remember self-confidence and not to give in to the doubt that others have placed on my shoulders.
The first gap is best filled with "resembled" (Sebastian comments here that many people believed that his sister was similar to him in the looks)
The second gap is "remembrance" - he means here that he cries after her (the more refers to more salt water, that is his tears)