To get a work visa you will need a work permit. When you get the work visa it will act as your entry visa to the country. So you will not need a separate visit visa.
Yes, however he/she will still need a work visa. I believe it is a H-1B visa.
yes you do need a visa if you from Nigeria.
NO they do not need a visa!
You need a passport to get a visa
As a tourist you will need to apply for a tourist visa. If you are applying for a different type of visa, all countries will need to apply for a visa
Yes, i need denmark visa.
yes, you do need a visa. If Germany is part of the EU than you need a Schengen Visa. If they are not, than you need a Visa from Germany.
Yes you need a visa and alot of paper work
do i need a visa to transit in london
mauritius need a visa
Yes, you do need a visa.