With example, list five accurate data sources that map makers can rely on for map making

There are lots of data sources available for map makers online. These data sources provides information on satellite imagery, topographical surveys, aerial photography, populations,natural features, etc. The information they provide is vital for the accuracy of a map.  Some of these sources are;

Natural Earth: A public free domain that provides cultural, physical and basemap data. USGS Earth Explorer: This data source provides an abundance of satellite and aerial imagery worldwide.Open Topology: Gives access to a high spatial resolution topographic data and tools like LiDAR (Light Detection and Ranging) Data.UNEP Environmental Data Explorer: This is a United Nations based data source. It provides useful data on population, forests, emissions, disasters and GDP of people and places. Global Map Github: provides useful data on boundaries, drainage, transportation, population centers, elevation, land cover, land use and vegetation of places on earth.

Ascenario that doesnt  include any modern objects like electricity

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion