At the bottom of this page there is a timeline that refers to the timeline of Iranian history from 1000 BC to present time. By choosing the period that is indicated either in reference to Christian or Islamic calendar, you can observe the objects corresponding to the requested period. By moving the mouse on the timeline the name of the corresponding period appears. Between the 9th and 13th century AD, the country was ruled by feudal governments; therefore, you notice overlaps of different dynasties and ruling families during this era. By choosing any given period, information about the related historic events are supplied on the subsequent page.