I'm not sure, but it is very easy to test. Take a look at Zest, which is a graphing toolkit based on draw2d. There are some useful snippets provided.
You can take one of those snippets, multiply the number of nodes drawn to 10K and see how it performs. From my experience with Zest, you should be up and running very quickly.
I've done what zvikico suggested. All using Zest... I've build a random binary tree with 10k nodes. It was sluggish but it worked and the nodes had a gradient as color.So I think some 10k nodes are possible with reasonable implementation.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.