In the year 1941, the deposition of Shah in favour of his son, Mohammad Reza Pahlavi happen.
In January, 1979, The political situation of the country becomes worsen that leads to the exile of Shah and his family.
In February 1979, Islamic religious opposition leader Ayatollah Ruhollah Khomeini returns to Iran from 14 years of exile.
In September 1980, Iraq invaded Iran that started the Iran-Iraq war, which continues about eight years.
In July 1988, the Iraq-Iran war ended after negotiations in Geneva under the supervision of the United nation.
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