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In page Yerevan:

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Under the Soviet rule, Yerevan became the first among the cities in the Soviet Union for which a general plan was developed. The "General Plan of Yerevan" developed by the academician Alexander Tamanian, was approved in 1924. It was initially designed for a population of 150,000.[citation needed] The city was quickly transformed into a modern industrial metropolis of over one million people.[citation needed] New educational, scientific and cultural institutions were founded as well.