The best way to do that would be to determine what the people of Gigas need that Union can offer them. Their military technology may be quite advanced, but they may be behind Union in terms of agricultural practices or medicine.

[Pamela may not be able to communicate with Pokemon like a Kindred Soul or Child of the Verdant Forest, but she can see a little unease in Sitron's body language. It makes her wonder if perhaps the Ponyta and Rapidash people have bonded with recently could shed some light on what's going on, if someone who can communicate more effectively with them spoke with them...]

As a researcher, I may be able to make some suggestions.