Answer: b. He wanted to remind people about what the nation’s founding ideals were.
Explanation:
This question relates to the "Gettysburg Address" which was one of the most popular speeches given by President Lincoln. He gave it at the occasion of the opening ceremony of the Gettysburg cemetery for Union soldiers.
President Lincoln began by referencing the founding of the nation because he wanted to encourage the Union that the fight they were in was a just one by reminding them of the nation's founding principles which called for liberty and freedom for all men and that in fighting for the end of slavery, they were merely following those ideals.
After the slavery was abolished in the south, the type of
cheap labor that the plantations rely on is through sharecropping. This is
considered to be a form of agriculture in which the tenant has been allowed by
a landowner in using his or her land but in exchange of sharing the crops that
the tenants produced on the land.