The purpose is to elect political candidates or to advance the outcome of a political issue. They raise and spend money to elect or defeat candidates.
Are you asking what influence have Greek had on Rome?
Answer:
D. The federal government can only function effectively if it has the ability to collect taxes.
It allowed a person's vote to only count for one instead of spread out compared to the votes given if you lived in urban, or rural areas. It also allowed certain people to vote.