| Scale | Urban share: ~10% → 50% over a century | Global urban share already >50%; absolute numbers far larger |
| Technology | Steam, rail, telegraph | Digital connectivity, mobile banking, GPS, modern construction |
| Governance | Laissez-faire; minimal planning | Many nations actively pursue urban planning, zoning, smart-city initiatives |
| Global Context | Colonial resource extraction | Globalized supply chains, FDI, climate constraints |
| Demographics | High fertility, high mortality | Declining fertility, younger populations, informal economies |