Mapmaking and technology history

First known map

100

Clay tablet from ancient Sumeria dating back to 2300 BC

United states geological survey

Jan 1, 1879

The USGS created the first map of the US this year

Nasa launches its first landsat satelite

Jan 1, 1972

This satelite showed earth in a new way

Nasa launches earth observing system

Jan 1, 1999

Provided precise measurements of earths processes

Dinosaur site found

Feb 1, 1999

Found using the landsat satelite