When Lincoln says, we here highly resolve that these dead shall not have died in vain," he is encouraging his listeners to:

It is rather for us to be here dedicated to the great task remaining before us -- that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion -- that we here highly resolve that these dead shall not have died in vain

Explanation:

I got this from google so i don't know if it is correct but i hope this helps!!!

postive, comparative, superlative - good, better, best

recall how we defined nouns as words capable of having plurals and possessive endings. adjectives (and their first cousin, the adverb) also have a feature that distinguishes them. they come in three states. first, the raw adjective—in its positive state—merely describes the noun modified; it doesn’t care about how this particular person or thing stacks up against other members of the same noun class

        its hard for some people to get along and that’s the case for douglass and canot. most of the time when people do not agree with each other its because they have different presperctives, and that is the case here.

captain canot was never a slave so but he was a slaver and a slave ship captain and just like the slave master's he tought it was it was totally normal, he used captain conot is a cruel man who enjoys whipping slaves but never   got whipped he saw it has a destiny for the slave to be a slave and the slaver to be a slaver   but douglass has suffered whoppings cut   even for no reason sometimes. douglass believed that slavery was not natural to black people, they need to study and learn how to read and write. he knew they have rights.

it was really not the captain’s fault he was just brainwashed by the system and when your brainwashed by the system its hard not to be brainwashed. but the reason douglass wants this is because he has suffered he knows how it feels and will do anything to stop that.