There is no significance. Taiwan gave them some money. Palau will be fine and certainly weighed which decision gives more money. These places go back and forth

There is no significance. Taiwan gave them some money. Palau will be fine and certainly weighed which decision gives more money. These places go back and forth like churning credit card bonuses. China could pay every one of them more so that there are no countries recognizing Taiwan as the "one China" but why bother? They are left as chips to send a message when needed.