The spatial extent of a raster, represents the "X, Y" coordinates of the corners of the raster in geographic space. This information, in addition to the cell size or spatial resolution, tells the program how to place or render each pixel in 2 dimensional space.
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A gas charged, violent eruption, which reached 30,000 feet.
The Mexican Revolution was a huge rebellion that occurred from 1910-1920.
Well when most authors write a poem it is to get a point across.