Answer:
They had a huge impact- creating a global wave of anti-semitism.
Explanation:
Especially during the 19th century, before the rise of Nazi Germany, pseudoscience on the basis of religion was extremely prevalent. These pseudoscience made outlandish claims like "Jewish people aren't human" or "Jewish people work for the devil." This anti-semitism created a wave which spread like wildfire across the globe - eventually leading to horrible, oppressive conditions for Jewish people.
Uh, trading? Immigrants? WAR?
There are a lot of reasons why america should concern itself with wath China is doing, like...
The Recycling Shortage (thingy) - China put stricter guidelines for other country's waste that they deposit to China.
Immigrants - Wonder why (maybe all) major cities has a China Town? Yeah, immigrants.
More people = Economy goes up
More tourists = Cash
War - Maybe not today, but in the past, people were concerned if China was gonna start a World War.
Issues with lines of succession
