Feudalism was when there were serfs and they were poor and the lords the masters and it all happened because the lords wouldn't do the dirty work she they needed people and so they hired people (serfs) and they used them for labor. the poor people also needed work so it worked perfectly for a while and then the system began to fall with the black death and everything else.
Answer:
Absolute monarchy
Anarchy
Commonwealth
Communist
Confederacy (Confederation)
Constitutional
Constitutional democracy
Constitutional monarchy
Democracy
Democratic republic
Dictatorship
Ecclesiastical
Emirate
Federal (Federation)
Federal republic
Islamic republic
Maoism
Marxism
Monarchy
Oligarchy
Parliamentary democracy
Parliamentary government (Cabinet-Parliamentary government)
Parliamentary monarchy
Presidential
Republic
Socialism
Theocracy
Totalitarian
In the US we are a republican form
Elastic Clause
Implied powers come from the Constitution's “Elastic Clause,” which grants Congress power to pass any laws considered “necessary and proper” for effectively exercising its “enumerated” powers.