I don't have time. I feel it coming... Something big is going to happen. These documents have to finished before Fall. If the crossover happens before then, we're screwed.
Kingdoms of Remnant
The kingdoms of Remnant act more like modern-day countries of that world and therefore can be good allies to those who plot for the destruction of earth. While the kingdoms are a priority to have as allies, you must still be wary due to the fact that they could ask more like assistance against the Grimm and conquest. Agree if you want to strengthen relationships, but could be a dangerous aspect of keeping what they know a secret. Each kingdom contains a Hunter school teaching teens to become Hunters against threats to humanity. Heavily guarded due to teachers and students with usually a city nearby. (Info on how to repel each nation can be found in Invasion).
Vale
Ran by a council of people providing to the people's need. The one person required to be an ally is Professor Ozpin of Beacon. Headmaster there, he is able to hold a decent amount of power and knows well about threats in Remnant. If Vale dropped a portal on Earth, it would appear on the African continent. The lifestyle of the country is much like Japan/American life with movies and decent training for hunters. Have teams RWBY, JNPR, CRDL, CFVY, etc. (Weaknesses on Hunters and Huntresses). Would be one of the easier kingdoms to have negotiations with since even though I don't trust Ozpin, he is a respectable man who would want peace for each world.
Atlas
Strict militarian kingdom in which both the academy and the government is one of the same. Headmaster Ironwood is connected to Ozpin's circle while does have conflicts to him on some moral aspects. If proportional to Earth would be located in Antarctica and some of Russia. Also home to the Schnee Dust Company, which exports most of Remnant's dust. Be wary of its president as his greed may extend towards Earth. Scientists are working on making A.I. far advanced from what Earth has made with Penny. (More on hunters and Huntresses.) Probably the Kingdom the most difficult to immigrate to, harder depending on where the timeline is placed. (See Time Periods for what happens if crossover appears in a specific period). They may be harder to negotiate with because of how most likely Atlas' government would ask for land on Earth or some other tough to swallow demands
Mistral
Shown to be more laid back by focusing on the arts. Mistal is eerily similar to some Asian cultures, matching to where the Kingdom is positional to Earth. The headmaster of the school has been known to be a spy for Salem (See Threats). Investigated as soon as possible. Known to have tons of diversity, so this kingdom may be the easiest to immigrate to with this knowledge. Relic is no longer in the kingdom as of the moment. It may also be easy to make peace with this kingdom because of my belief that Mistral's defenses are the weakest and therefore would choose any option but fighting.
Vacuo
The rowdiest of the Kingdoms with the unspoken rule of "If you can survive here, then you are one of us." Placed in South America if proportional to Earth. Little info on the kingdom is actually given as shows still needs to actually show the kingdom at all in the show. Desert landscape may lead to a disadvantage for "Terrans" (Earth people). Least known out of all the Kingdoms as it has yet to be shown in RWBY. There is also the fact of how Vacuo doesn't really have a central government, so making deals with them may turn to be problematic.
Menagerie
The most unpredictable country for Earth to handle with. The continent is separate from the 4 kingdoms and is considered to be a safe haven for the Faunus. If contact is made, don't make the same mistake ss the Europeans did to the African continent. Don't immediately move in right away and don't take over the country as Remnant may see this as taking Remmen land for strategic purposes. Try to make a peace treaty with them to get Faunus first, but you may face opposition. (See Faunus.)
Dragon Continent
THIS PLACE IS UNINHABITABLE. DO NOT FOR ANY REASON GO WITHOUT STRONG MILITARY BACKUP. NO KNOWN SURVIVORS TO COME BACK FROM THE CONTINENT AFTER TRAVELING THERE. The continent is suspected to host the spawning grounds of the Grimm and of Salem. Without investigation, the continent will continue to be a mystery to all. Any attempts to take this land for Terran purposes would be foolish without the proper resources to acquire the land from so many Grimm. Would be placed in North America and Greenland. If a means of travel were to created there, the results would be catastrophic.
END OF CHAPTER
More info may be added when details in show revealed
Does not explain each of the artifacts of the kingdoms as too dangerous to name types and where
More details of kingdoms found other countries. This is just a summary of what these kingdoms are like for an average viewer.
I need to write faster. I want to become a hero when the Crossover happens...