Hi, welcome to Hetalia Archives! Thanks for your edit to the Ancient Rome page.
RE:Character Relationships[edit source]
You're welcome! Thanks for contributing to the Wikia. The "relationship" sections of the character pages are meant for relations with characters that appear most often throughout the series; although sometimes there may be just some relations that are worth noting that aren't always the most popular (for example, the Poland section of Italy's relationships). It's perfectly fine if you'd like to add some sections if you think that they're worth noting. The pages would get a little crowded for putting all the characters that Italy's interacted with, so it's for that reason that only the characters like Germany and Japan are listed under Italy's relations.