Yes
No not unless you become an Australian citizen. You aply to the New Zealand authoritys for your new passport.
No, if such citizen keeps his/her passport at hand.
yes
Nepalese are the people living in Nepal (the country).
You don't need a passport to travel within the continental United States, even if you are not a citizen.
You can get the passport but after 10 years of living in SA.
Contact the British Embassy.
the answer is no. Wales is like a state inside the uk. so if you travel to Wales, or scottland i don't think you need a passport.
A Nigerian national who is living in, but is not a citizen of Poland, and does not have a Polish passport, will need to apply for a visa to visit the UK.
No. Your passport comes from the country in which you are a citizen. If you're not a UK citizen, you shouldn't have a UK passport no matter where you live. If you've got dual citizenship (your parents were US citizens, but you were born in the UK, or vice versa), then you're not required to have passports from both countries. It's usually more convenient for your passport to be from the country you actually live in (especially if you plan to travel outside it and return), but it's not, strictly speaking, required. What you need from the country in which you're living is not a passport but a visa. Unless, of course, you're a citizen of that country as well, in which case you just need proof of citizenship; a passport is only one form of such proof.
1000
This question assumes that you're dual citizen. If that's the case, you can use either passport to get into Canada. If you're a Canadian Citizen and don't have a valid passport, then i'd suggest getting one. Other then that you'll need SOME sort of passport to get into the country, and then to get back into the US. This is a lot of assumptions in the question seeing as it is a little vague.