Ancient China's sophisticated rice cultivation (as early as the 6th century BCE), leveraging advanced irrigation to enable multiple harvests. Roman crop rotation (from the 2nd century BCE), where they strategically alternated grains with nitrogen-fixing legumes, enriching the soil for subsequent crops and eliminating fallow periods. The Ancient Egyptians impressively practiced multi-cropping along the fertile banks of the Nile, often achieving 2-3 harvests annually, thanks to the predictable annual floods and clever basin irrigation systems (around 3000 BCE). In the Americas, the ingenious "Three Sisters" system (corn, beans, and squash) allowed Native American tribes to effectively intercrop and double-crop by 1000 CE, with each plant supporting the others in a symbiotic cycle.

Looks like ancient farmers invented "nature's original multitasking"! Who knew planting twice could break agriculture and build empires?! 👨‍🌾👑