"In this way, the Athenians came to the circumstances under which they grew in power." The first sentence from Thucydides' [Pentecontaetia](http://en.wikipedia.org/wiki/Pentecontaetia). This is a long post and chances are you only need information from part of it. Here’s a table of contents: Background 1. Trees: In Linguistics and in d3 2. Our Incoming Data 3. Dependencies Base Code 1. Our HTML 2. Our Main for Require.js 3. Our JS Base Key Functions 1.