Read the conditions at the link bellow.
Five years
An American can stay in Italy for up to 90 days within a 180-day period without needing a visa or residency permit. After 90 days, they would need to obtain a visa or residency permit to stay longer.
Oficially ten years.
No, you cannot. You on YOUR PASSPORT need a permit to stay.
they try to make ' band permit'.
Americans can stay in Germany for up to 90 days within a 180-day period without a visa. If they wish to stay longer or for other purposes, they may need to apply for a visa or residence permit.
That depends on where you are moving from. If you are not an EC citizen, you will need permission to stay and a work permit.
You can stay as long as you need in a hostel.
If you conform to the legal requirements of the country you may stay in the UK for as long as those requirements allow. Having a car registered in Romania will not affect those rights. Nor will it grant any
There is no time limit for the residence of EU citizens in Germany, but you must register your intention to stay and apply for a residents permit.
as long as they need to.
As long as you like, there is no time limit. Any UK citizen can leave the UK at any time and stay away for the rest of their life, if they want to. The reverse question is important, how long will the country you go to let you stay there? A UK citizen has the right to live and work in any EU country for as long as they like. For any other country you will need permission to stay there permanently (visa, residence permit, work permit). Finally you will need to renew your UK passport eventually. You can do this at a British Embassy by post. You do not need to return to the UK for this.