Why do people become toxic. Or why do they like to spread false rumors onto social media?

I think a big reason some people become toxic and spread rumors may be due to the influence of other friends and jealousy. People tend to become toxic because they want something that you may have, or even want to be like you, so they degrade you so that they can feel better about themselves and feel more accepted.  It could even be just to turn people against you so that they can recieve the amount of attention that they want, so you are left out and alone.

Explanation:

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.