1.discovery of iron
2.the use of iron weapons
My assumption to this sentence would be Music.
Simon Bolivar was usually referred to as revolutionary (who freed six countries.) He argued problems of national liberation and fought a war of pure violence. He inspired devotion and dedication. Although some labeled him as a traitor and tried to assassinate him most Spanish Americans wanted him to be there king. So I'm not sure what you mean as a cruel leader but everything I have learned about him is the exact opposite.<span />
Where is the question in this?