All of the following are ways that manors were self-sufficient during the Middle Ages EXCEPT

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !

If i remember correctly it was caused by people hurling bodies at a country for some reason and them they all became infected