Timeline of biotechnology

Before Common Era

• 7000 BCE – Chinese discover fermentation through beer making.
• 6000 BCE – Yogurt and cheese made with lactic acid-producing bacteria by various people.
• 4000 BCE – Egyptians bake leavened bread using yeast.
• 500 BCE – Moldy soybean curds used as an antibiotic.
• 250 BCE – The Greeks practice crop rotation for maximum soil fertility
• 100 CE – Chinese use chrysanthemum as a natural insecticide.

For more read: https://en.wikipedia.org/wiki/Timeline_of_biotechnology