Is trade-offs in production necessary only when a country economy is operating at peak efficiency?

Which was not characteristic of rome's two-hundred-year pax romana? oppression independence stability peace

1. discovered the new world balboa 2. explored the north american southwest hudson 3. his crew was the first to sail around the world vespucci 4. conquered the incas of peru cortes 5. discovered the pacific ocean columbus 6. conquered the aztecs of mexico cabot 7. discovered fishing grounds off newfoundland pizarro 8. looted spanish vessels for england drake 9. claimed the hudson river area for dutch coronado 10. priest who explored the mississippi marquette 11. man for whom the new world is named magellan

Reflect on how egypt and mesopotamian civilizations flourished what similarities do you think exist between ancient india amd other early civilization