The leap from this to Europeans "discovering" the Americas is quite some leap. Nobody really discovered anything of course, maybe the original inhabitants could be said to have done so. I would opine the European, especially Spanish, actions in the "New World" had an enormous impact on history. Spain became the wealthiest empire in the world, for a time.
Oddly enough, all this happened just at the time the Moors (and Jews) were kicked out of the Iberian peninsula. A lot of the Jews ended up in Islamic lands (and what now is Italy). History does indeed not rhyme, but it's fascinating.
