Just heard that homosexuality caused the fall of the Roman Empire. I wasn't taught that in history classes. what I learned was as follows: What caused the fall of Rome? Corruption, the division of the empire, and invasion by Germanic tribes were the three main causes of the fall of Rome. Some scholars believe that there were other contributing factors as well. I also feel that it started when Caesar crossed the Rubicon. The New Speaker of the House should read a book other than the Bible and stop watching YouTube.