conquistadors

[kporter903]

how did a few thousand conquistadors conquer a continent of millions

[Ethel]

Disease which decimated American natives , followed by a civil war in the Americas, which further weakened their possible defences.

[jno]

yes, quite a lot of quislings helped.

[KaitCat]

What's a quisling?

[Clanad]

Explained in this: http://www.merriam-webster.com/cgi-bin/mwwodar ch.pl?Jul.28.2007 ...

If you happen to come back, jno ... Hearty congratulations on your upcoming retirement...I sincerely hope you enjoy every well earned minute...