Which were results of the construction of transcontinental railroad?

choose all answers that are correct.

a. the railroad led to the creation of uniform time zones in order to make scheduling trains easier.

b. the railroad cut travel time between the east and west coasts of the united states by many weeks.

c. the railroad made the plains indians wealthy because they owned the land it crossed.

d. the railroad allowed the great plains to become the most densely populated region of the country.

Explanation:

this says multiple choise

i think it is b the time was cut in half hope it helped

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

in 1859, brown and 21 of his followers attacked and occupied the federal arsenal in harper's ferry. their goal was to capture supplies and use them to arm a slave rebellion. brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon. abolitionist and insurrectionist

explanation: