the answer is (when a country imposes a ban on trade with a particular country.)
C, the chinese government recently lowered taxes on all foreign imports
An ancient Greek tragedy includes a character that faces a tragic flaw, and learns a moral/lesson. The character usually has a foil.
<span>An example of a tragedy: Antigone. It was a book that showed the fate of people who had pride. Creon noticed his flaw too late, and then he faced fate, as Haimon killed himself after Antigone's death. I recommend you read this Greek tragedy, very interesting. </span>
The Great Wall is a fortificated East-to-West line which historically has delimited the Chinese Northern border. Its primary purpouse was to defend the Chinese territory against the invasions and quick raids organized by the nomadic people from the Eurasian Steppe lands, located more to the North.
But rather than as a fixed border, it should be regarded as a transition zone which establishes a distinction between two different lifestyles, even nowadays: the farmer regions in the South with sedentary ways of life and the pasture lands in the North, where its inhabitants have nomadic lifestyles and work mainly in animal husbandry activities.
Thaddeus Stevens and Charles Sumner were two most outspoken radical republicans.
hope this helps!