Columbus believed he had reached Asia when he had traveled less than halfway there because geographical knowledge at the time was limited. They believed if they sailed West they would reach Asia by sea but actually ended up in the Americas. He thought the world was smaller than it actually was.
"<span>It was practiced in Ancient Greece and Rome, yet became less common with the rise of Christianity" would be the best option from the list, since Christians tended to think that it was a sin. </span>
Southeast Asia is the region with Thailand and Indonesia.
Southwest Asia is not a commonly used term, but this would be the Arabian Peninsula and regions around it.
The body of water between them (and south of South Asia= India and north of India) is Indian Ocean, option 3.
