<span>As the door slowly creaked open, Jessie peered carefully into the vast darkness, holding her breath.
The "slowness" of the creaking door and the "vast darkness" add a weight to the sentence unlike the others. </span>

In the English language, the word "who" is almost always used as a pronoun.
It represents a person, similar to the words "I" and "me".
Answer:
On May 13, 1846 the United States Congress passed An Act providing for the Prosecution of the existing War between the United States and the Republic of Mexico, thereby declaring war against Mexico.
Explanation:
Answer: Something that is able to achieve a desired outcome or end result. A good solid argument that lets you convince others of your point
Explanation:.
Answer:
Progressive implies something that is happening in stages, while Advanced implies that the stage has moved forward to a large extent.
Explanation:
Progressive and advanced are both adjectives used to describe the stages of an event or activity. Progressive implies continuity or the ongoing state of the activity. It also connotes the idea of something that is meeting up to current trends. For example, the old Professor has progressive knowledge of Information Technology. Advanced refers to the fact that the activity has progressed to a far stage.
Progressive: The ailment is progressive.
Advanced: The ailment is advanced.