Board Thread:General Discussion/@comment-5900266-20130201022632/@comment-5795750-20130205120431

Unless you provide with the weapons used by each Empire, we can't help you that much but I reckon...

Maratha Confederacy vs Mongol Horde or French Empire (1600s)

Songhai Empire vs Roman Empire or Frankish Kingdom

Khmer (Siam) Empire vs Greek Empire or Carthaginian Empire