Well, they were over 8 miles away when the bomb detonated, so they wouldn't have seen any of the destruction. Even reconnaissance planes were initially unable to survey the extent of the destruction due to the enormous amounts of smoke caused by the fires, and dust brought up by the bomb.
Also the service ceiling for the B-29 is 31,850ft. 40,000ft would've been impossible.
After heavy shelling and bombing, Warsaw surrendered to the Germans on September 27, 1939. Britain and France, standing by their guarantee of Poland's border, had declared war on Germany on September 3, 1939. The Soviet Union invaded eastern Poland on September 17, 1939.
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Map projections and distortion. If a map preserves shape, then feature outlines (like country boundaries) look the same on the map as they do on the earth
Map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground.
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes
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