The confederal government was established following the American Revolution. The Articles of Confederation provided for this form of government is which the central government had few powers.
Now, the US desired for a stronger form of government that could craft power more central but also be intended for people’s need all over the country. Hence, the federal system was established.
Claudius goes on to bribe Hamlet's friends and while they do protest they end up accepting anyways in hope of helping their friend. I belive that would be considered justified.