"Marilyn Monroe" is the best option from the list in terms of someone who represents this, since her pictures and movies were absorbed throughout the globe by different societies.
It means that the power of the Pope and the church in the matter of state affairs of one nation is deteriorating to the point that Napoleon proclaimed himself as Emperor of the French Empire without the full consent of the Church especially of the Pope. It also signifies the changes and reforms of the way the society and the system works in one state and the separation of the Church and the State.
To give them an advantage on the enemy
A) Abraham Lincoln became their candidate.