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.

i would say your answer would be the second option.

hope this !

i cant if you dont give me the sentence or whatever.

man·u·script

/ˈmanyəˌskript/submit

noun

a book, document, or piece of music written by hand rather than typed or printed.

synonyms: document, text, script, paper, typescript

an author's text that has not yet been published.

thats all i can with. sorry. next time post the full question.