The forces and groups who are here today represent several different alliances. These different alliances are not united with each other in their efforts. Each alliance represents several different racial groups who are collaborating for the purpose of gaining access to your world’s resources and maintaining this access.
These different alliances are, in essence, competing with each other though they are not at war with one another. They see your world as a great prize, something they want to have for themselves.
This creates a very great challenge for your people, for the forces who are visiting you not only have advanced technology, but also strong social cohesion and are able to influence thought in the mental environment.
You see, in the Greater Community, technology is easily acquired, and so the great advantage between competing societies is the ability to influence thought. This has taken on very sophisticated demonstrations. It represents a set of skills that humanity is only beginning to discover.
As a result, your visitors do not come armed with great weapons or with armies or with armadas of vessels. They come in relatively small groups, but they possess considerable skill in influencing people.
Passage from The Allies of Humanity, Book One.