The Journeys Of Niccolo And Maffeo Polo Demonstrated That European Society Greatly Changed After The Western Roman Empire And The Carolingian Empire Fell. The Europeans Obviously Showed That They Were Interested In Political Organization, Demographic Increase, And Economic Growth, Which Allowed Them To Make Their Way Back Into The Larger World. Europeans Became Interested In Political Organizations In The High Middle Ages.
Discontent with the Shah's rule Exile of Ruhollah Khomeini Social injustice Religious motives and others & to Overthrow of the Pahlavi dynasty
The Fugtive Slave Act favored the South because when a slave was caught escaping, they would immediantly be returned to the owner. Then, afterwards, they were allowed to harshly punish the slave afterwards. The slave still belonged to the owner, and this punishment could not be avoided unless the slave made it to the North, aka Canada.