Which scenario could happen only during the modern era?

a. a student turns on an electric light to read at night.
b. a merchant in asia purchases goods from europe.
c. a family eats food that was grown on their own land.
d. a person travels from europe to africa by boat.

abraham lincoln was the president of usa and he had asked the audience to make a pledge on equality.

his pledge was:

“it is my earnest desire to know the will of the providence.”

lincoln also had hatred for people who condoned and practiced slavery and so he pledged:

""and if i can learnt what it is i can do it"" this is another pledge by abraham to reassure the congregation on how to deal with the providence will.

explanation:

hope this !