Mapping the Growth of America

This animated map shows the growth of built-up areas in San Francisco from 1860-1930. It visualizes the rapid growth of the city following the California gold rush in the second half of the 19th Century.This animated GIF was made using the interactive map Historical Built-Up Areas, 1810 - 2015. This amazing map uses data from the HISDAC-US: Historical Settlement Data Compilation for the United
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