Easiest Route to becoming a teacher in the USA?

I'm currently in my third and final year of my UG degree in history and I want to pursue secondary teaching as a career after I graduate. I've applied for a PG in secondary education which is a year starting September. I'm considering moving to the USA to teach, probably permanently as it is somewhere I've always wanted to live. I read that 3 years of UG study and a PG are enough to qualify for teaching in the USA but they will also obviously prefer people to have some experience in the classroom beforehand. Unfortunately the PG can't be part time only full time so I can't use a second year to gain work experience.

Should I try and find some teaching experience in the UK for two years after I graduate my Masters and then prepare to move to the USA to teach? I think that is probably the best option but I'd prefer to hear what is best for me to do from someone else who knows more about this stuff than I do.

You're better off teaching in the UK for the first couple of years so you can complete your ECT Induction (it takes two years) and it also means you'll find it easier to find a job in the UK if you ever wanted to move back here to teach.

Is the ECT induction further teacher training after my post graduate degree is finished? Or are new teachers placed in schools as trainee teachers? Will this enable me to be eligible to teach in both the uk and the us because looking online some British teachers who have emigrated to the USA have said the process of becoming a teacher there is complicated and others have said it is relatively simple, so I’m not sure which is more accurate.