WHY DID CITIES HAVE TO BE NEAR RAILROADS OR START BUILDING

Easier to trade/get more materials

Explanation: To get more materials to build the cities, you need an effecent way to do it, which is why you need to be near a railraod. Most people would also trade, and railroads are easier to trade with. People also need to travel, and it's faster when you're near a station.

answer; does not include a reference to the audience;

answer; nonverbal decoding;