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.

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.

a reason that was key to coolidge's victory in the 1924 presidental election was that; democratic party supporters were split in the north and south.