I believe he created new laws for them to follow. Those laws are the Ten Commandments
Two striking cultural similarity between the American culture and the roman culture are the love for entertainment and the desire for numerous laws.
entertainment is at the heart of the American life and today nearly every homestead own a television for homes, and tunes on to movies either on pc,Netflix or DVD that resembles Roman gladiator contests. Romans were particularly thrilled by entertainment which was done through sports. Americans also love laws,political and legal issues, a result of which is numerous juries,lawsuits and debates, which is similar to the Roman era contention with laws regarding slavery, citizenship among st other civil issues such as divorce.
The right answer is the third one: the bubonic plague originated in the Gobi Desert, part of the then Mongol Empire, around 1320. It then propagated to China and subsequently to India, Europe and Russia. The disease spread via trade routes mainly as a result of a poor hygiene. It never reached the American continent or Sub-Saharan Africa.