"In a time long forgotten, my people served as Stewards of the Star. We cultivated life and worked for the betterment of all who dwelled upon our world." It's a simple explanation that leaves out much of the day-to-day that such a process involved, but it is explanation enough.

"But an unforeseen calamity befell my people, and thus..." He gestures toward the crowd with an open palm. Perhaps that alone would fill the gap as to what happened. "The world continues on. All the while, they who inherited the world know nothing of the Legacy that has been left to them."