The role of political parties from state to state:

A.) varies
B.) is the same
C.) does not change

Im pretty sure the answer is d.) is more densely populated.

Primary sources are usually  more accurate and are written by someone who experienced it or witnessed it. secondary sources are those who heard of it after the fact that can lose details and or twist the event in a light that benefits them.

Dictatorship is the answer you are looking for