What 1900's technological invention

allowed the U. S. postal service to deliver

the mail considerably faster than

previous methods?

A. airplane

B. subway train

C. steam ship

D. pony express

A. Airplane

Explanation:

Around 1918, Air delivery, became the new mode of transportation for mail, as it rendered railroad services unnecessary. During this period, the Post Office moved on the airplane bandwagon early, there by, offering air mail service in the early 1900s.

Hence, the 1900's technological invention which allowed the U.S. postal service to deliver the mail considerably faster than previous methods is AIRPLANE.

the answer is "by providing data about careers and annual mean wages"

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.