You need another comma after the word "think" because it's a parenthetical expression and is set off from the sentence.
Answer:
he was gay because he killed alot of Jews...
From 500 A.D to 900 drama was almost unheard of outside of churches. People didn't care much for it up until after 900 A.D.
No, his argument is oversimplified. (But also who recommends slavery as an answer to anything?!)