I've seen a lot of good teacher websites in the ten years that I've been a teacher but this is probably the best one I've seen, especially for maps. This teacher has a map for every event in world history (most are taken from the same textbook we use). He also has outline maps for every civilization we study. In addition to maps, you'll also find primary sources, power points, and worksheets. My thanks to Jeff Feinstein who keeps sending me great sites like this.