Im pretty sure the answer is D if it is not then it should be B
Out of the choices given, the event that is related to Christian crusades that occurred last in 1261 was the Byzantines recaptured Constantinople and end the Latin empire. The correct answer is C.
The Roman Constitution called for the government to be made up of the senate, the legislative assemblies, and the executive magistrates. This is an example of the separation of powers.
The answer is A because totalitarianism is complete control of government and as much as possible