Which empire was most influential to modern times and why? Greek Empire
Holy Roman Empire
Spanish Empire

Spanish Empire was most influential to modern times.

Because the Spanish Empire became to known as "the empire on which the sun never sets" and it has reached its maximum extent in the 18 century the Spanish Empire in America's was formed after conquering indigenous empires and claiming large stretches of land beginning with Christopher Columbus in the Carribean Islands.

May be this was ur answer

both include an amendment process.

1. temperance, abolitionist, suffragist