HISTORTOISE

1. Guess the year this map shows (type BC for years before Christ).
2. Each guess redraws the map at your year; Compare hatches what's different.
3. The arrow and "maps away" tell you which way and how far.
4. He looks up if the answer is later and digs down if it's earlier; the longer the neck, the further off.
5. The key under the map names the biggest powers. Tap one to see it blink.

Hatched land had no state we can map.