I would say that it depends on the audience. Personally, a debate regarding ethics and moral dilemma is interesting. Read The Fat Man and the Impending Doom. It's just one paragraph so it's not going to bore audience.
https://thedailydilemma.wordpress.com/2007/06/18/fat-man/
I believe that this type is a lecture-forum discussion.
I would have to say that the best way to revise sentence four is by changing "aren't" and "they're" to "are not" and "they are."
"Argue" works better than "fight."
Deleting the entire sentence would remove the transition into cost efficiency of the tablets.
And moving the sentence to the end would place the transition to cost efficiency in the wrong place.
Answer:
They could express their feelings.
Explanation:
They can express their feelings against discrimination through prices of art wether it be music, dance or drawing or any kind of art.
Although not recognized immediately after the battle and after the war. It's significance became noted after Lincoln's assignation in 1865. Politicians and historians began to analyze the significance of the speech after his death to further understand the war and the abolishment of slavery.