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Earth Explorer provide 50m/pixel resolution statllite/topographic/blend map for whole world. Information such as political boundaries, coastlines,
rivers, lake and island boundaries is provided. 267 countries and regions,
40000+ ranked cities, 15000+ islands, and 1900+ noteworthy
historical earthquakes since 1980, etc. Users
can add place marks and path onto the map, or import user-defined data list to the map. You can treat it as a education software for geographic, find maps, or manager you own map data.