Short answers, pulled from the story.
Kaziranga National Park, located on the bank of the Brahmaputra River in Assam, is a UNESCO World Heritage Site and the primary refuge for the Indian one-horned rhinoceros. More than half of the entire wild population of this species lives in Assam, and Kaziranga has been central to conserving the animal from near extinction.
The Ahom kingdom was established in 1228 CE when Sukapha led a Tai group from Mong Mao in south-western Yunnan, China into the Brahmaputra Valley. The kingdom ruled for nearly 600 years until its annexation by the British East India Company in 1826, following the Treaty of Yandabo.
Camellia sinensis was discovered in Assam in 1834, with samples tested in London in 1836-37. Land was made available for renting to companies from 1839 onward, and by the 1850s the tea industry was generating profits. The local variety, Camellia assamica, was ultimately adopted as the most suitable for cultivation.
The Assam Agitation was triggered by the discovery of a sudden and unexplained rise in registered voters on electoral rolls. The All Assam Students Union and allied groups demanded that the government identify and deport foreigners illegally migrating from Bangladesh. The agitation lasted roughly six years and ended with the Assam Accord in 1985.
Forty-five languages are spoken in Assam, drawn from Austroasiatic, Sino-Tibetan, and Indo-European families, along with three languages that fall outside these families. Assamese is the most widely spoken, used by more than 71 per cent of the population including second-language speakers, and serves as the region's lingua franca.
Oil was discovered in Assam in 1867, and drilling began in 1889. The Assam-Arakan basin is estimated to hold about a quarter of India's oil reserves and produces roughly 12 per cent of the country's total petroleum output.