it depends who or what company is going to transport it anywhere around the world
Yes.
yes
No
Carefully
Ask an undertaker to do/arrange this for you.
about 1 month
Transporting a dead body from Nevada to Mexico is a two step process. Step 1: Place dead body in the trunk of a car. Step 2: Drive to Mexico. Any questions?
You, as an individual, may not transport a deceased's remains. Only the authorities and licensed funeral homes may do so.
4 mil. not 4 mil. not
yes
The best way to learn about the COST is to check the yellow pages in England (Transport) or to ask the British Airways.