What is a federal democratic republican state?
( In Short very short 1 sentence )

Explanation:

A state having republican form of government is called a federal democratic republican state.

federation of states with a republican form of government is called federal democratic republican state

(hope this helped)

idk

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."