The expansion of the Company's power chiefly took two forms. The first of these was the outright annexation of Indian states and subsequent direct governance of the underlying regions, which collectively came to comprise British India. The annexed regions included the North-Western Provinces (comprising Rohilkhand, Gorakhpur, and the Doab) (1801), Delhi (1803), Assam ([Ahom Kingdom] 1828), and Sindh (1839 to 1843). Punjab, North-West Frontier Province, and Kashmir, were annexed after the Anglo-Sikh Wars in 1849–56 (Period of tenure of Marquess of Dalhousie Governor General); however, Kashmir was immediately sold under the Treaty of Amritsar (1850) to the Dogra Dynasty of Jammu, and thereby became a princely state. In 1854 Berar was annexed, and the state of Oudh two years later.