Udayapur DistrictUdayapur District (उदयपुर जिल्ला, is one of 14 districts of Koshi Province of eastern Nepal. The district, with Triyuga as its district headquarters, covers an area of and in 2001 had a population of 287,689, in 2011 of 317,532, in 2021 of 342,773 The district border of Udayapur is drawn by Natural border with rivers and hills. Koshi river in the east of the district separates it from Sunsari District, Sun Kosi river in the north draw a borderline which separates it from Bhojpur and Khotang.
KathmanduKathmandu, officially Kathmandu Metropolitan City, is the capital and most populous city of Nepal with 845,767 inhabitants living in 105,649 households as of the 2021 Nepal census and 2.9 million people in its urban agglomeration. It is located in the Kathmandu Valley, a large valley in the high plateaus in central Nepal, at an altitude of . The city is one of the oldest continuously inhabited places in the world, founded in the 2nd century AD.
SikkimSikkim (ˈsɪkᵻm; ˈsikːim) is a state in northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Koshi Province of Nepal in the west, and West Bengal in the south. Sikkim is also close to the Siliguri Corridor, which borders Bangladesh. Sikkim is the least populous and second smallest among the Indian states. Situated in the Eastern Himalaya, Sikkim is notable for its biodiversity, including alpine and subtropical climates, as well as being a host to Kangchenjunga, the highest peak in India and third highest on Earth.
