Economic: first two concepts2. Geological: the third conceptC. Two common mistakes made in resource evaluation:1. Current Reserves â  Potential ReservesThe static reserve index is a commonly used measure of how long a resource basewill last.a. DEFINITION: The static reserve index is the ratio of current reservesto current consumption.
Geography of Iran. When Persia became Iran. This article is a part of Persia or Iran by Professor Ehsan Yarshater, published in Iranian Studies, Vol. XXII, No.1, 1989. In 1935 the Iranian government requested those countries which it had diplomatic relations with, to call Persia Iran, which is the name of the country in Persian.
The Safavid dynasty (1502-1736) made Islam and Shi'a the religion of Iran although Islam was always popular then. The latest kings of Iran were from the Pahlavi dynasty, and ruled from 1925 until 1979, when there was a revolution and Ayatollah Khomeini created an Islamic republic.