The v1 timeline doesn't really work for me, which is a shame, because I love the Poland sandbox. The v2.2 timeline works a little better, and I've never read the T2013 one.
With only a few changes (the conceit of the new designers regarding Sweden, for instance), the v4 timeline works for me for plausibility. It's not perfect, but I like it considerably better than its predecessors.
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