Not sure if it's urban legend or not, but I read somewhere that handshakes started in feudal times: you shook each others arms to make sure nobody was hiding a

Not sure if it's urban legend or not, but I read somewhere that handshakes started in feudal times: you shook each others arms to make sure nobody was hiding a knife underneath their armor. But that might be another "railroad tracks are the width they are because of roman war horses" story.