Answer:
Magna Carta, which means 'The Great Charter', is one of the most important documents in history as it established the principle that everyone is subject to the law, even the king, and guarantees the rights of individuals, the right to justice and the right to a fair trial.
Explanation:
1. wanted to establish an abolitionist republic = John Brown: he was against slavery and wanted to eradicate it
2. sued for his freedom = Dred Scott: he wanted to get his freedom in the court, but was unsuccessful
3. Underground Railroad = Harriet Tubman: established safe houses for escaped enslaved families
4. Clay's plan to end sectionalism = American Plan: they refused to negotiate with unions
5. surrender began Civil War = Fort Sumter: after this battle, numerous countries joined the Confederacy
6. won 1860 Presidential election = Abraham Lincoln
7. proslavery constitution in Kansas = Lecompton Fraud: written as a response to the anti-slavery resolutions
if this is a true or false question it would be false he was a coronal in the military
It seems that you have missed the given choices for this question. But anyway, the correct answer to the given question above would be TRIALS AND JURIES. Trials and juries are guaranteed by the constitution during criminal cases. Hope this answer helps.
