Yes.
No.
No other country will ever, nor should ever, adopt the US Constitution.
which of these were the first men to adopt a constitution
The first colony to adopt its own constitution was: New Hampshire.
rhode island was the last state to adopt it
1972
Britain will proably adopt the Euro at some time, however they have opted not to use it for now. When or if t that will change is unknown.
1981
Pennsylvania
Not specifically.
1816
The first colony to adopt its own constitution was: New Hampshire.
Britain adopted decimal currency in 1971.