Given Sam's confusion, Rex knew now that revealing anything more wouldn't put himself in danger. While that was a relief, he found it more unsettling that there was someone who didn't know about the Republic or the war or, presumably, Jedi.

"It's--" Rex didn't even know how he was supposed to explain. "An interplanetary government. It's fallen now." Rex did not seem pleased with this development.

What interested him was Sam's description of telekinesis. "You said pushing people? Do you mean the force?"

As if a fallen Republic wasn't clue enough.