Explain the role the telegraph played in train system and what problems might trains have had without the telegraph?

The telegraph could be used to communicate the arrival and departure of trains at stations along railroad lines. Without it we wouldnt have things like phones or anything and to be able to send messages and such.

- by a random middle schooler

hitlers fav so e: jews

i believe the answer is the last option, the magyars preferred to invade by land.

i hope this ! : )