Each question is actually a link to another node on the timeline. As you go from node to node, or explore all the questions of a single node, your history timeline starts to fill out.
Eventually you end up with a graphically compelling network of nodes along a timeline that shows how things connect
Eventually you end up with a graphically compelling network of nodes along a timeline that shows how things connect
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Either it will have to be built up node by node from a dedicated user base or scraped from somewhere like wiki.