In george orwells book 1984, he envisioned large unified states. has this vision of a global/political arrangement become a reality?

Personally, I think Orwell's vision in "1984" has become a reality at least partially. There are many unified states/countries nowadays, the European Union being probably the finest example.

The case was a u.s. supreme court decision that defined the scope of the u.s. congress's legislative power and how it relates to the powers of american state legislatures. the dispute in mcculloch involved the legality of the national bank and a tax that the state of maryland imposed on it.

Ending prohibition in oklahoma schools