also, i think dollar came from German - http://www.etymonline.com/index.php?term=dollar
Especially since the US adoption of the word 'dollar' for their currency occurred because of its use by the Spanish to refer to certain coins.
The word's evolution was joachimsthaler -> thaler -> taler/dollar. German is a correct answer, even with your rules.
Dutch > Afrikaans > American English
But apartheid is definitely a DUTCH word. It may be identified
with South Africa because it was the system of government
there for a long time and Afrikaans is a dialect of Dutch, but the
word itself is a Dutch word.
If you know any names for coins it would be a no brainer, i think after gulden it is the next most known name. And i really dont see if you have done extensive research how you could miss it.
Great quiz, btw!