Okay, I've been trying to figure out this last problem for the best part of an hour now and I think I'm starting to hallucinate!
44d - I assume the first letter comes from "Tanzania's first" and the last letter from "start to obtain" - that means I need an A from "to" with an added "W" - so presumably "two" - I've read and re-read both "A" and "two" and even "tow" in Chambers for umpteenth time and am just not seeing it.
I assume I've gone wrong somewhere - but where?