'in 1884, astronomers and geographers set this line as the starting point for east-west measurements'
Prime Meridian (Greenwich)
MAPS: in 1884, astronomers and geographers set this line as the starting point for east-west measurements
in 1884, astronomers and geographers set this line as the starting point for east-west measurements
in 1884, astronomers and geographers set this line as the starting point for east-west measurements
MAPS
Prime Meridian Greenwich
MAPS