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

In India we drink mostly Buffalo milk some drink cow’s milk too but cow’s milk is mainly used for religious purposes and for making ghee a type of butter which is also used for religious purposes as far as I know.