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.
It is used to show when you had that song before
I think the first quote best develops the central idea that African Americans have been intentionally block from voting in election.
"Every device of which human ingenuity is capable, has been used to deny this right."
Meaning that every device humans have have been used to deny the right to vote in elections.