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USGS (United States Geological Survey)
This was mapped by the entire United States. And was founded by Congress for the purpose of "classification of the public lands." -
1940 new tech
New technology arrived. Mapping was involved -
Aerial Photography
This is when the co polit takea a picture during the flight. -
Satellite (NASA)
NASA launched the first Landsat satellite. -
AMNH (American Museum of Natural History)
a team of scientists from the AMNH used Landset images to find a new site of dinosaur and early mammel fossils in the Gobi Desert. -
New technology
NASA launched another satellite The Earth Observing System. -
First known map
The first known map was on a clay tablet in acient Sumeria. this is 2300 B.C.