When someone claims the 5th amendment rights that means that the person can refuse to answer questions about a possible crime or anything that they believe could incriminate them. Basically, they can't make you testify against yourself if you don't want to. The person in the questions knows something that might incriminate him but he doesn't have to answer because he doesn't want to get in trouble.
I Believe the answer is: Confederate--or a confederation of states.
In the confederate form of government, each states within the country have the voting power to overrule the regulations that made by the government.
This would make the government significantly weaker compared to the states and would basically give no influence to control the actions made by the states.
each representative represents approximately 108,734 people.