In the case of police actions were supported by the supreme court in their attempt to keep peace after a threat was made on the individual exercising his right to freedom of speech.

The answer to your question would be "Feiner v. New York"

answer; i believe that the correct answer is (c) arctic tundra;

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).