Answer:
Invasive species, including communicable diseases, etc..
Answer:
I'm pretty sure its B.
Explanation:
The Persians were defeated causing Xerxes to retreat back to Persia. After the first invasion, the Athenians built up a mighty fleet of ships called triremes. The Persian Empire was eventually conquered by the Greeks under the leadership of Alexander the Great.
Answer:
religious groups work for reform and social service.
the answer is B (thousands were accused of being communist sympathizers.)
7. not sure about this one
8. <span>The Qing emperor received Lord Macartney but rejected Britain’s requests for trade.</span>