just as long as it is valid it doesnt matter
Three months.
For the duration of your visit.
According to the State Department website and the airlines (USAirways) your passport just needs to be valid for your travel dates. As long as you are back before your passport expires, you are OK.
UK passport holders require 6 months left on their passport
two months
Yes, any visit, no matter how short or long is required to have a Passport to enter Canada, same goes for the US
Yes. You should definitely be able to visit Cyprus as long as your Jamaican passport has not expired.
How long needed on passport to travel to FinlandFinland
0.5 seconds
Yes you can, as long as your passport is valid
It should such that it will not expire during your planned time in the United States, however long that is.
You don't need a passport to travel between the UK and the Republic of Ireland.