Vladimir Antonovich Dybo (Russian: Влади́мир Анто́нович Дыбо́; born 30 April 1931) is a Russian linguist whose areas of research include the Slavic languages, Indo-European, Nostratic, and Nilo-Saharan. His daughter Anna V. Dybo (born 1959) has collaborated with Sergei Starostin on an etymological dictionary of the Altaic languages, which encompasses some 3,000 Proto-Altaic stems.

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The Delhi Sultanate was an Islamic empire based in Delhi that stretched over large parts of the Indian subcontinent for 320 years (1206–1526). Five dynasties ruled over the Delhi Sultanate sequentially: the Mamluk dynasty (1206–1290), the Khalji dynasty (1290–1320), the Tughlaq dynasty (1320–1414), the Sayyid dynasty (1414–1451), and the Lodi dynasty (1451–1526). The sultanate is noted for its integration of the Indian subcontinent into a global cosmopolitan culture (as seen concretely in the development of the Hindustani language and Indo-Islamic architecture), being one of the few powers to repel attacks by the Mongols (from the Chagatai Khanate) and for enthroning one of the few female rulers in Islamic history, Razia Sultana, who reigned from 1236 to 1240. However, it was also responsible for the large-scale desecration of Hindu and Buddhist temples (leading to the decline of Buddhism in East India and Bengal), the destruction of universities and libraries, and for presiding over a decline in India's share of world GDP. Qutb al-Din Aibak, a former Turkic Mamluk slave of Muhammad Ghori, was the founder of the Delhi Sultnate, and his Mamluk dynasty conquered large areas of northern India. Afterwards, the Khalji dynasty was also able to conquer most of central India, but both failed to conquer the whole of the Indian subcontinent. The sultanate reached the peak of its geographical reach during the Turco-Indian Tughlaq dynasty, occupying most of the Indian subcontinent. This was followed by decline due to Hindu reconquests, states such as the Vijayanagara Empire and Mewar asserting independence, and new Muslim sultanates such as the Bengal Sultanate breaking off. In 1526, the Sultanate was conquered and succeeded by the Mughal Empire.

Vladimir Antonovich Dybo (Russian: Влади́мир Анто́нович Дыбо́; born 30 April 1931) is a Russian linguist whose areas of research include the Slavic languages, Indo-European, Nostratic, and Nilo-Saharan. Dybo is known for his reconstruction of Balto-Slavic accentuation, the first ever attempted. He has subscribed to the Nostratic hypothesis and established the Illich-Svitych Nostratic Seminar in Moscow. Dybo is the head of the Department of Slavic Languages in the Faculty of Theoretical and Applied Linguistics at the Russian State University for the Humanities, as well as a full member of the Russian Academy of Sciences. His daughter Anna V. Dybo (born 1959) has collaborated with Sergei Starostin on an etymological dictionary of the Altaic languages, which encompasses some 3,000 Proto-Altaic stems.