Political Causes and Social Detachment of Getting Aparts of Iran in Qajar Era

Perhaps this is many people’s question that “what has happened in Qajar era that about half of the country was lost?” and the smallest answer is that since the beginning of the nineteenth century, international longtime and powerful colonial appears in state apparatus and by using ignorance and tyranny of men who were king, and ambitious claims between the princes and rulers and influential people, expanded the power saving and competition and corruption and betrayal between these men and released anxiety and frustration and fear between population. Unhealthy relationship with aliens was the most important reason of detaching many parts of Iran in that era. This study that is an analytical - descriptive study based on library data collection, in addition to present the general items, tries to discrib the role of traitors in Qajar era in separating apart Iran.