Random?
i. Hawke expedition lead to red lyrium
ii. Hawke finding money for the expedition lead to involvement with Qunari, involved with Templar and Mage problems, involvement in Chantry and Qunari problem
iii. Hawke expedition lead to Anders in which lead to the destruction of the Chantry
iv. Hawke involvement with the Qunari lead to the first destruction of Kirkwal, failed in diplomacy
v. Hawke influence in Kirkwal lead to Meredith jealousy and make her crazy, the craziness multiplied by the red lyrium Hawke found in the Deep Road
vi. Hawke ivolve in Corypeus escape lead to the breach
vii. Everything happen in Kirkwal is because Hawke going to Kirkwal
1. The Expedition would have gone, with or without Hawke. Hawke had no control over finding the red lyrium idol or Bartram's actions afterwards. Absolutely not Hawke's fault.
2. This doesn't even make any sense. So what? Hawke taking odd jobs that brought him into contact with various individuals and organizations does not make him responsible for the actions of those individuals and organizations.
3. Anders was already in town, and would have done his thing with or without Hawke. In fact, he does his thing just fine without any assistance from Hawke as proven by the fact that you can kick him out of the party in Act 2, leaving him on his own. Or you can refuse to assist him, also leaving him on his own. And you can report him to the Templars, with him standing right there, and he still gets away with it. Hawke is not responsible for Anders being a terrorist, or for Anders' actions, or the Templars being incompetent.
4. The Arishok being completely unable to deal with a society outside the Qun is what led to his actions against Kirkwall, not Hawke's involvement. However, Hawke's involvement, one way or another, definitely mitigated the overall scale and duration of the Qunari aggression. So, while only Isabella could have stopped what happened, Hawke definitely prevented it from being worse.
5. Proof that at any point Meredith was jealous of Hawke? What did she have to be jealous about? Even if the Champion stool against her on certain subjects, she still ruled the city uncontested. And she was already crazy. Hawke had nothing to do with that. Her guilt over what happened to her sister was responsible there.
6. Again, Hawke is not responsible for the actions and motivations of other people. Nor is Hawke responsible for the completely unforseeable ability of completely unknown entities. Hawke had two choices: Defend himself and his sibling or don't. Both would have eventually led to Corypheus' escape. The Wardens hold all of the blame for keeping Corypheus and the method they used to imprison him.
7. Factually incorrect. The Qunari presence in Kirkwall was completely unrelated to Hawke. Meredith's opinions on mages were completely unrelated to Hawke. Meredith's untitled rulership of the city, even before the death of Dumar, had nothing to do with Hawke. The Tethras expedition into the deep roads would have happened without Hawke. Hawke may have been involved in events, but was not the cause of them. In almost every case it could, Hawke's involvement prevents bad situations from being worse.