The answer would be letter C.
Answer:
with whatever you're writing, you just provide where you got it from and the source you see or looked at
On April 23 1918 British naval forces attacked U-boat basses at Ostend and Zeebrugge. By the Armistice ,the U boat threat has been brutalised
Christianity continued to spread because of many missionaries going out and Spreading the word of God. One other reason would have to be the spread of Catholicism which was Christianity but, later changed because of the Romans. This is my basic Knowledge but, I'm not sure if this is going to help but, here you go. :D
