do the usa have post offices like the uk? if not where is it they go to send letters and parcels?

Answer 1

Yes we have post offices.

Answer 2

yes, we have post offices.

yes, they have slow lines and, at the holiday season, plenty of waiting. all bureaucracies do this

of course, we're also the home of FedEx and UPS, so there are lots of private enterprise mailing services which will handle your needs faster and more conveniently, if somewhat more expensively.