Why have nato’s operations changed overtime? a. the simple goal of defending western europe got more complex after the cold war, and nato now responds to more diverse threats like humanitarian crises. b. their direct competition with united nations has evolved to lead to political actions c. the unity of the european union has demanded a stronger military force defend it d. when the us left nato after the end of the cold war and they had to revolve to focus on more humanitarian measures with the smaller budget

d.)   when the us left nato after the end of the cold war and they had to evolve to focus on more humanitarian measures with the smaller budget

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".

after world war ii, the united states and the soviet union were the major economic, military, and political powers. the world was bilateral multipolar bipolar unilateral

after world war ii, the united states and the soviet union were the major economic, military, and political powers. the world was bipolar.  

the great leap forward, mao zedong's plan to increase china's agricultural and industrial production, was an overwhelming success. true false

the great leap forward, mao zedong's plan to increase china's agricultural and industrial production, was an overwhelming success. true.

explanation: