What is the difference between primary and secondary sources?

a. primary sources are always reliable, while a secondary source's reliability depends on its creator.
b. primary sources are firsthand accounts, while secondary sources are created after the fact.
c. primary sources are very old, while secondary sources are created recently.
d. primary sources are created by regular people, while secondary sources are the work of experts.

After the supreme court’s ruling on the dred scott case, many people in the north believed that a. slavery might become legal everywhere. b. slavery might be banned everywhere. c. formerly enslaved people would move to the north. d. formerly enslaved people would stay in the south.

Which statement best summarizes the process of the abolition of slavery in the united states? o a slave owners agreed to limit and ultimately abolish slavery to prevent a slave rebellion similar to the haitian revolution o b. the united states did not abolish slavery until after many latin american countries did because it faced opposition from powerful slaveholders o c. the abolition movement in the united states used a series of legal challenges to successfully outlaw slavery. d. the abolition movement used nonviolent tactics to eventually convince the u.s. government to abolish slavery.

How important was the erie canal in in connect, unify and expand the nation