What made us settle on cow’s milk and chicken eggs as our standard milk/egg?

Question

I understand that people also eat quail eggs, goat milk or etc etc due to geography (?) – but at what point and why did many settle on chicken eggs and cow milk?

Thank you

ETA: WOOAAAAAAH a great deal of responses here. thank you!!!!

In: 16218

Answer 1

Yield. Many other animals produce milk and eggs, but we have discovered cows that can produce more and are easy enough to rear. Same for eggs, egg hens may lay eggs daily while geese pretty much only lay a couple of eggs in spring.