Ṭahmāsb (English spelling) Tahmasb

...On the other hand, his efforts to make Twelver Muslims the state religion and persecution of Sunnis created hostility with the Ottoman Empire and Uzbeks, both of which supported Sunni Islam, and in 1514 the Iranian army was defeated in the first battle against the Ottoman Turks. In 1524, when the 10-year-old Tahmasb (1514-76) ascended to the throne, the Qizilbash nobles, who held real political power, fought for power among themselves, causing political turmoil. As a result, Iran was unable to take adequate measures against the invasions of the Ottoman Empire and Uzbeks, and the capital was moved from Tabriz to Qazvin.

*Some of the glossaries that mention "Ṭahmāsb" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…一方，彼の行った十二イマーム派の国教化，スンナ派信徒の迫害は，スンナ派を奉じるオスマン帝国，ウズベクとの敵対関係を生み，14年最初の対オスマン･トルコ戦でイラン軍は敗北を喫した。24年，10歳のタフマースブṬahmāsb(1514‐76)が即位すると，政治の実権を握ったクズルバシュ貴族たちが互いに勢力を争い，政情が乱れた。ためにオスマン帝国，ウズベクの侵攻に対して十分な手が打てず，首都はタブリーズからカズビーンに移された。…

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出典｜株式会社平凡社世界大百科事典 第２版について | 情報