Which of these was made possible by railroads apex?

Faster mail delivery was made possible by railroads.

The construction of railroads made it possible for a lot of cities to be connected. This led to mails being delivered through trains and deliveries were dropped on each city that the trains passed by. This allowed people to receive their mails a lot faster compared in the past.

he armenian genocide, also known as the armenian holocaust, was the ottoman government's systematic extermination of 1.5 million armenians, mostly citizens within the ottoman empire.

explanation:

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