Geography uses other subject in it's studies. Very close to geography are geophysics and geology. Geophysics studies quantitatively physical phenomena of the planet Earth, geology studies composition of soil rocks and their development through history. Geography uses biology, statistics, mathematics and other subjects in order to better describe the Earth.
Delaware is east of the Mason-Dixon Line, not south of it. The line runs east to west separating PA and MD. It then turns ninety degrees at the wedge formed between PA, MD, and DE and runs north to south.
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The surrounding water is usually understood to be continuous, though not necessarily named as a single body of water.
Explanation: