Franz Joseph caught a cold after going for a walk with the Ludwig III, which proved fatal.
Let’s say he doesn’t go for a walk.
Now, the man is 86 in 1916. He can die relatively easily at that point regardless. But to avoid making my PoD pointless, if Joseph naturally lives to 1926 unless murdered, how does this change history?
Does WWI play out differently? Do the Habsburg's maintain control over anything if they lose here?