In the text, you read this about the dred scott case:

dred scott had been enslaved for many years in missouri. later, he moved with his owner, who was an army surgeon, to illinois and then to the wisconsin territory, where slavery was not allowed. after they returned to missouri, scott’s owner died. the owner's wife took ownership of scott, and eventually those rights transferred to her brother, john sandford. antislavery lawyers scott to file a lawsuit, a legal case brought to settle a dispute between people or groups. scott’s lawyers argued that, because scott had lived in a free territory, he had become a free man.

use the passage to answer the question.
4.
according to dred scott's lawsuit, how had his rights been violated?

he had been forced to move against his will to different places.
he was not allowed to talk to a lawyer to prepare for his case.
he was kept as a slave even though he lived in free territory.
his ownership had been transferred without his agreement.

5.
after the dred scott decision, frederick douglass said he sought to have americans live up to the principles of the constitution. what did he believe prevented americans from living up to the constitution?

manifest destiny
abolition
popular sovereignty
slavery