What is "thorn-crowned, blood stained and sweaty" referring to? Who is being compared?

answer; taking up arms to defend the nation;

c) troops march forward in close formation against newer, more accurate weapons

john maynrd keynes developed new economic respose to the                           ( b. great depression if the 1930's)

result of the incas claiming exclusive right over numerous traditional routes, some of which had been constructed centuries earlier mostly by the wari empire