The Frankish of Weakness and Instability and Opportunism

The three surviving heirs of louis the pious were all ruling a separate kingdom at this point. So with that, with that civil war that was raging in the frankish rum, did thot hinder their defensive response by the franks to the viking attacks? Andy: You've got, frankish of weakness and instability and viking strength and opportunism. I guess maybe nowi's a good point to just talk about a word you use in your book, title, hydrax and hydrarchy - because that sort of talks about how the vikings organized themselves. What does that word mean? Where os it come from?Andy: While we took ther hyderarchy is