Perhaps monkeys at one point had an advanced civlization, and they built boats and SAILED to South America.

i have the answer:

the monkeys flew out of my butt while i was there.

That's brings up a good point. Have they eliminated the possibility of flying monkeys?

I saw a documentary or a movie or something about them once.

Was there a witch, a girl and a little dog in that 'documentary'?

Yeah, and a lot of singing.

I guess that's infotainment for you, though. Everything has to be all flashy these days.

Never discount the possiblity of flying pigs until you have good air defense.