Morse code is a form of communication that is based off of using dots and dashes (Morse code examples up above) to send messages or distress signals that can be shown using sounds or light.
Morse code was developed between the 1830s and 1840s and was invented by Samuel Morse, who used to be a painter. He had other inventors help create this new form of communication as well.
Morse code was sent through telegraphs that connected to telegraph lines, sort of how landline phones work today. When you press the buttons, you use dots or dashes in certain bursts of time to tell the other what message you are trying to pass on to them. The person who is receiving this message then writes down the message to translate it back into English.
Positive effects Morse code included was that now people can send messages to others quickly. Some negative effects include that the telegraph sending Morse code could replace newspapers, which made newspaper companies angry, because they might lose their jobs. Making telegraphs and setting up the lines were also very expensive, making companies be the main purchaser of them. Not too many homes owned a telegraph.
The modern day version of Morse code/telegraph is a telephone. They do the exact same thing, but phones are easier because they can get your direct message instead of having to translate it. Although Morse code was replaced with the phone, people in the military will send signals using Morse code so no enemies will be able to figure out the message they are trying to pass.
Morse code didn't really affect the North and South conflict, but it helped expand both further west and strengthen each other’s economy because now businesses could become international markets, now being able to send messages quickly.