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The Great Trigonometrical Survey of India was a project that aimed to carry out a survey across the Indian subcontinent with scientific precision. It begun in 1802 by the British infantry officer William Lambton, under the auspices of the East India Company. [1]
Advisor to the Indian Government: The Survey of India acts as an adviser to the Government of India on all cartography-related matters, such as geodesy, photogrammetry, mapping and map reproduction. Geo names: Survey of India is responsible for the naming convention and spellings of names of geographical features of India .
Joseph E. Schwartzberg (2008) proposes that the Bronze Age Indus Valley civilization (c. 2500–1900 BCE) may have known "cartographic activity" based on a number of excavated surveying instruments and measuring rods and that the use of large scale constructional plans, cosmological drawings, and cartographic material was known in India with some regularity since the Vedic period (1st ...
The precise definition of an "Indian subcontinent" in a geopolitical context is somewhat contested as there is no globally accepted definition on which countries are a part of South Asia or the Indian subcontinent. [61] [62] [63] [6] Whether called the Indian subcontinent or South Asia, the definition of the geographical extent of this region ...
Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.
An arc of mountains consisting of the Himalayas, Hindu Kush, and Patkai ranges define the northern frontiers of the Indian subcontinent. [20] These were formed by the ongoing tectonic plates collision of the Indian and Eurasian plates. The mountains in these ranges include some of the world's tallest mountains which act as a barrier to cold ...
Insular India was an isolated landmass which became the Indian subcontinent.Across the latter stages of the Cretaceous and most of the Paleocene, following the breakup of Gondwana, the Indian subcontinent remained an isolated landmass as the Indian Plate drifted across the Tethys Ocean, forming the Indian Ocean.
The following outline is provided as an overview of and topical guide to the history of South Asia.. The broader region in and around the historical Indian subcontinent, which includes the contemporary geopolitical entities of Afghanistan, Bangladesh, Bhutan, India, Nepal, Pakistan, and the island countries of Maldives and Sri Lanka.