这个条目的其他章节
- ep.19 Brazil (The Atomic Era)
- ep.20 Scythia (The Atomic Era)
- ep.21 Sumeria (The Ancient Era)
- ep.22 Aztec (The Medieval Era)
- ep.23 Kongo (The Medieval Era)
- ep.24 Egypt (The Medieval Era)
- ep.25 Egypt (The Industrial Era)
- ep.26 China (The Industrial Era)
- ep.27 China (The Atomic Era)
- ep.28 Kongo (The Atomic Era)