What are the historic examples of countries that were failed states and then became normal states?

To narrow it down, are there historic examples of countries that were once in a similar situation like El Salvador and Honduras (with massive gang violence, failing rule of law and a huge amount of displaced persons) but managed to become stable safe places.

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    Germany? As in: the Holy Roman Empire became Imperial Germany over a period a time, culminating with the unification in 1871. Italy, in a similar story. – o.m. Oct 16 '19 at 5:57
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    @o.m. I find it insulting you consider pre-1871 Germany as a failed state. – Bregalad Oct 16 '19 at 10:29
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    Since the question was closed. I'll put a small answer here. Most states have had a period of failure, for example, when they have civil wars, when institutions are gone (no institutions and no authority means a failed state). China case: At the end of XIX century China was a failed state, they had several civil wars and external invasions, later China was being divided between powers and then it was partially occupied by Japan, after that they had a long civil war that only ended in 1949, when modern China starts. Colombia was also a failed state, but now, without guerrilla, is no longer one. – Santiago Oct 16 '19 at 12:31
  • The Articles of Confederation? Shay's rebellion. The U S civil war? You will probably have to define "failed state" more precisely. Was the English Restoration an example? – Mark C. Wallace Oct 16 '19 at 13:27
  • @Santiago offers I think the key to the answer. Look for any state that had a civil war or insurrection . – Mark C. Wallace Oct 16 '19 at 13:52