The <a href="https://en.wikipedia.org/wiki/Persian_Constitutional_Revolution" title="Persian Constitutional Revolution">Persian Constitutional Revolution</a> between 1905 and 1911 led to the establishment of an Iranian parliament. After the <a href="https://en.wikipedia.org/wiki/1921_Persian_coup_d%27%C3%A9tat" title="1921 Persian coup d'état">1921 coup d'état</a>, the Qajar dynasty was replaced with the <a href="https://en.wikipedia.org/wiki/Pahlavi_dynasty" title="Pahlavi dynasty">Pahlavi dynasty</a>.
