1. Morse's original code was developed in the US and was later renamed American Morse Code.
2. European Morse code was developed in Germany about a decade later.
3. International Morse code was derived from European Morse code with a few modifications by international agreement in the 1860s. It quickly replaced the European Morse code throughout Europe for all purposes and the American Morse code for International Shipping but not on land or on coastal ships. International Morse code did not completely replace American Morse code until the early 20th century.

1. Morse's original code was developed in the US and was later renamed American Morse code.
2. European Morse code was developed in Germany about a decade later.
3. International Morse code was derived from European Morse code with a few modifications by international agreement in the 1860s. It quickly replaced the European Morse code throughout Europe for all purposes and the American Morse code for international shipping but not on land or on coastal ships. International Morse code did not completely replace American Morse code until the early 20th century.

Yes, while Morse Code is a branch off of American English, it has many unique Characters and abbreviations. Morse Code is as much a language as American Sign Language. -DE KI4WXI

At the end of the song American Eulogy, there is Morse code that says, "We are the class of 13"

There are also rhythmic "dots and dashes" between Last Of The American Girls and Murder City; these may sound like Morse code but they aren't.