Throughout the following centuries, Tehran continued to grow and expand, attracting people from across Iran and beyond. In the 19th century, the Qajar dynasty further developed the city, introducing modern amenities such as telegraph lines, schools, and hospitals. In the early 20th century, Iran underwent a period of rapid modernization and urbanization under the rule of Reza Shah Pahlavi. Tehran was transformed into a modern capital city with new buildings, roads, and public spaces. The city's population boomed, and its status as a cultural and economic hub was solidified.
