Answer:
a disagreement over who was the head of the church
Explanation:
The West Indies was what the islands are sometimes called to this day, this came from the (false) belief that Columbus has discovered Asia/India.
I think that it is c. because it makes the most sense.
World War 1 ended November 11th, 1918
<em>Slavery</em> the Civil War, states also had the right to decide if slavery would be legal or not.