Question

what effect did the construction of the transcontinental railroad have on communication mailed from coast - to - coast?
the railroad made coast - to - coast communication instantaneous.
the railroad reduced coast - to - coast communication time from about a week to about a day.
the railroad reduced coast - to - coast communication time from about half a year to about a week.
the railroad made coast - to - coast communication more complicated.

Explanation:

To solve this, we analyze each option:

• Option 1: Instantaneous communication was not possible with the railroad (instantaneous would be like telegraph or modern tech), so this is wrong.
• Option 2: The transcontinental railroad used mail cars, and before the railroad, coast - to - coast mail could take about a week (by stagecoach, ship combinations), and with the railroad, it could be delivered in about a day, so this is correct.
• Option 3: Half a year for coast - to - coast communication is too long; even before the railroad, communication was faster than that, so this is wrong.
• Option 4: The railroad streamlined communication by providing a faster mail transport system, it did not make it more complicated, so this is wrong.

Answer:

B. The railroad reduced coast - to - coast communication time from about a week to about a day.