1. more para of the interior geography of North America were mapped.
2. The Americans "realized" that from the Atlantic ocean to the Pacif Ocean, there was no water passage.
The seven oh seven or aka 707 was a military plane used to transport goods and troops to any battles short distance of course because they didn't know how well the plane would do long distance til it became the first plane to carry 1,011 people across the pacific ocean and is now seen as commercial airplanes also as tanker planes. hope this helps!
<span>d. it was accessible to people from different parts of the world.?
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