B I think I hope this helps you out I’m not for sure tho
One of the major dangers of living in a tenement was the quick and deadly spread of disease. This was due almost entirely to the fact that people in these conditions were extremely close together, meaning that germs were able to spread quickly.
Answer:
1) China had an emperor/empress, which is commonly used to refer to a ruler of an empire.
2) The land in which the chinese empire govern rivals that of Rome, Persia, and other well-known 'empires' of Europe.
3) China had established and secure borders, well-developed literature and writings, a national currency that was used throughout it's land, a large standing army, taxes on both currency, trade, products, and wealth.
4) China had established trade with other civilizations.
etc.
Slavery, and invention of the cotton gin, the internal conflict within the Congress
Well they know that what our bones look like so if it were an animal skeleton they would know how the animals bones are suppose to look so they can fix the broken bone same way with humens. i hope im right <3