A reason why might China had a strong cultural and economic influence on Mongolia because the deserts and mountains in the west that were mostly impassible due to the limited long-range transportation options available, early China's civilizations were unaware that European civilizations existed prior to the development of the Silk Road. In this way, geography kept early China culturally and economically isolated from the rest the world. However, ancient Chinese civilizations were exposed to the sheep and cattle herders inhabiting the grasslands in the northwest, and the fishing cultures along the southeast coasts. These surrounding societies were both nomadic and illiterate; a fact which led ancient China to consider itself the most valuable and advanced civilization by comparison.
Some vaccines are made out of egg proteins, which is why it is imperative for those administering them to ask if the patient has an egg allergy. Some vaccines may cause a severe allergic reaction. However, if hives are all the patient gets from eggs, the vaccines are still administered. If they get more than hives, they are closely monitored if given the vaccine.
