posted on Sep, 23 2009 @ 08:15 PM
Oh, if we're talking one item, with no instruction, that could be used to change the course of their history and lead them dramatically.
A second moon.
All of our religious histories are based around astrology. If there were two moons, the religions would be totally different.
Hell, if there were two SUNS, imagine what our religious history would be like! LOL!
So yeah, I'd probably nuke Jupiter, and turn it into a second sun.