Answer: The root of "Pacific" is "pac-", which means "peace".
Step-by-step explanation: "Pac-" is a root word that comes from Latin. Moreover, its meaning is "peace". The root "pac-" is present in many words. One of them is "pacific", an adjective used to describe something or someone as "peaceable", that is to say as something/someone that contributes to keeping peace. Other words in which "pac-" is present are "pacifism" and "pacify".