3 ms·
When Mongols Set Out to Conquer the World, There Was One Limiting Factor: Grass (154 points by benbreen 9 months ago) https://news.ycombinator.com/item?id=30886
by l- 4y ago
When Mongols Set Out to Conquer the World, There Was One Limiting Factor: Grass (154 points by benbreen 9 months ago) https://news.ycombinator.com/item?id=30886110 https://news.ycombinator.com/item?id=30886110