It exchaged the. splended cultures of China
An increase in life expectancy
In WW1 soldiers faced a lot of threats in the trenches , the worst would be disease
The development of farming was crucial to the formation of civilization since this allowed for there to be a surplus of food, which meant that people could devote themselves to other tasks and skills that are necessary for society to form.
Answer:
I don't really think this is a question... (more a statement) so I'm not entirely sure how to answer you other than a simple "Okay. That's an interesting and true statement." Sorry I couldn't help. Please clarify what the question was. Was it a true of false question? Is the question not complete? Again, sorry, but I can't help you here.