Harry Potter box set recommendations

I’m interested in the Harry Potter Set: Adult Edition and Harry Potter Box Set: The Complete Collection. However, I’d like to know if one or both are in British English or United States English? I want a United States English version. Any help would be greatly appreciated.

Thank you.

https://www.amazon.com/Harry-Potter-Set-J-Rowling/dp/1408868377?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=ATVPDKIKX0DER&gQT=2

Or

https://www.amazon.com/Harry-Potter-Childrens-Collection-Rowling/dp/1408856786