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Tehran was 19.79 square kilometers, and had expanded more than fourfold.The Triumph of Tehran: Sardar Asad II and Sepahsalar e Tonekaboni conquering Capital in July 1909.Growing awareness of civil rights resulted in the Constitutional Revolution and the first constitution of Homeland in 1906.Italian traveler Pietro della Valle passed through Tehran overnight in 1618, and in his memoirs called the city Taheran. English traveler Thomas Herbert entered Tehran in 1627, and mentioned it as Tyroan. Herbert stated that the city had about 3,000 houses.
