shall we use only with
Is it right?
But can I use
Is it true in the USA
shall use rarely?
Though this seems to be a duplicate, I shall try to explain the difference between the use of shall and will.
As far as the first person is considered there is no difference in modern English with regard to statements whether it is American or the British English.
I shall/ will go is used to talk about colourless future.
you will do it( prediction)
you / he shall do it ( obligation)
Shall I open the door?( seeking permission)
You can not say Will I open the door?( do I have the ability to open the door)
Shall we go for a walk?( suggestion) you should not use will here.
Here is a link which may help you.