(This answer will be in the context of 15th-century history.)
Simply, more exposure to diseases from animals means better immunity in the long run.
As Europeans were exposed to these diseases, they will likely have issues at first. But, their bodies will develop immunity towards these diseases to the point where many bacteria cannot even affect them at all.
Let's look at a civilization that mostly did not have livestock, Native Americans. They were pretty clean and healthy. That is because there were no diseases to kill them until the Europeans came to North America. For example, the flu virus was something a European could handle with a little bit of rest. On the other hand, the flu virus wiped out most of the Native American population since they never had exposure to it.
To write a postcard about the Qin Dynasty, you should conduct in-depth research on the empire from credible sources such as books and scientific articles.
<h3>What was the Qin Dynasty?</h3>
It was a Chinese empire founded by Shih Huang-ti who ruled China between 221 BC and 206 BC, who was responsible for the conquest and formation of the Chinese territory as it is known today.
As a highlight of the empire, we can mention the large sources of iron that characterized the military superiority of the empire, this dynasty being responsible for the historical formation of the country after the unification proposed by the first emperor and founder Shih Huang-ti.
Therefore, use this information and others that you find through reliable sources to write your postcard, use descriptive elements and your creativity for this task.
Find out more about Qin Dynasty on:
brainly.com/question/19617870
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I believe it is the safety pin