Why does the author mention the city of Philadelphia in line 9?
A.Its postal service was inadequate for its population.
B.It was commemorated by the first US postage stamp.
C.It was the largest city in the USA in 1847
D.It was the site of the first post office in the USA
A.Its postal service was inadequate for its population.
B.It was commemorated by the first US postage stamp.
C.It was the largest city in the USA in 1847
D.It was the site of the first post office in the USA
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Hóa Học lớp 12
