Apollo program was designed to land a man on the moon.
The correct answer is Constantine I.
Constantine split the empire into Western and Eastern parts and established a new capital in the East: Constantinople (named after himself, but the city was before called Byzantium).
Before him, Diocletian split the empire into 4 different parts, but Constantine united these parts.
The Enlightenment and the American Revolution changed the way people viewed their relationship to their rulers, mainly by opening each person's eyes, and undesrtand that their ruler's interest was not the best one. Contributed with the understanding that rationalism is more important than tradition and religion, which the monarchies around Europe often used in a way where it seemed acceptable that they were absolute monarchies, because of tradition.
The correct option is C) Slavery was an established institution until the Twelfth Amendment was ratified on December 18, 1865.
This option is actually wrong since the twelfth amendment actually provides the procedure to elect the President and Vice President of the United States.
Other options in the question are true. Dr. Martin Luther King, Jr. DID give the famous "I Have a Dream" speech in 1963 which has now become ingrained in US culture.
Also, In 1870 the Fifteenth Amendment gave all male citizens the right to vote. Before this amendment, not everyone really had the right to vote and it would be another 90 years until women got the right to vote.