>>36
I'm not
>>35 but what the hell.
My answer to your first question would be increasing flexibility in education and labour regulations. It's not going to prevent market crashes but improves response time and allows fast recovery. The philosophical foundation doesn't see market crashes as something to be avoided and completely rejects the idea of market failure.
Your second question applies to all systems of governments. Usurpers cannot be stopped by any political philosophy simply due to the nature of usurpation. However, I might have another source of civil war in mind like some hooligans trash a pub in another state/town which leads to retaliation and so on -> give a concrete example please.
Lastly, I'd change "can be a bad thing" to "can be dangerous". At any rate, it requires a much deeper expedition into liberal/libertarian philosophy than I care to go on the intertubes.