2. Select the correct text in the passage.
Which words and phrases in the passage show credibility?
Ancient Rome
Rome was once just a small town in central Italy. But most history students know that Rome had begun to turn into a massive empire by 200 BC. This empire covered a major part of Europe, Britain, west Asia, and northern Africa. Ancient Romans also brought about the modern Western alphabet, and they were involved in the emergence of Christianity as a major world religion. According to a blog maintained by the History Department at Harvard University, Rome was a republic for 450 years until it became an empire under Julius Caesar. The British Museum has determined that the fall of the Roman Empire took place by the fifth century AD. The empire's fall is said to be one of the most shocking and dramatic events in the history of human civilization.