1) A constitution is a set of fundamental principles or established precedents according to which a state or other organization is governed.
2) Declaration ordinarily refers to a judgment of the court or an award of an arbitration tribunal is a binding adjudication of the rights or other legal relations of the parties which does not provide for or order enforcement.
3) Feudalism was a combination of legal and military customs in medieval Europe that flourished between the 9th and 15th centuries.
4) War is a state of armed conflict between societies.
5) A revolution is a fundamental change in political power or organizational structures that takes place in a relatively short period of time when the population rises up in revolt against the current authorities.
6) Occupation is effective provisional control of a certain ruling power over a territory which is not under the formal sovereignty of that entity, without the volition of the actual sovereign.