In classical times (let's say 200 BC to 400 AD), how accurately could a Greek/Roman/Babylonian/etc. astronomer determine their location on the earth by coordinates like latitude/longitude? Could they ...
On some buildings in Moscow (and other cities in European part of Russia) there are carvings of three interconnected wreaths. For example, some are on the Pushkin Museum building on Prechistenka: ...
For 1900 onwards, the US Census Bureau has population estimates for each US state, for each year. There are also decennial censal counts for 1860, 1870, 1880, etc. But where can I find population ...