Do you admire federated system of Germany too? They famously have many department operating semi-autonomous, causing immense friction in adopting any new change

Do you admire federated system of Germany too? They famously have many department operating semi-autonomous, causing immense friction in adopting any new changes. Do you admire federated system EU? Where countries can run unchecked for years and it is very hard to fix issues in any specific member country. I'm not criticizing any country or union here, and not praising them. I merely highlighting that maybe federation on its own is not the main cause of success of USA and there are some other more important factors at play.