C. The necessary and proper clause is known as the elastic clause because it allowed Congress to do things outside of their enumerated powers.
Answer:
The real and main reason was The Assassination of Archduke Francisco Ferdinand heir to the throne of Austria-Hungary in his visit in Bosnia. The Hero Gavrilo Princep killed him because he want his country to have independence.
There are also reasons like Imperialism, Nationalism, Militarism and many otherd
the best answer u got here is A. Administrative reform and urban planning
lets check the other answers and see what we got here
lets see here B. War socialism and trench warfare is not the right answer u got here lets look at C next
C. Land reform and trench warfare is not the correct answer u got here
and last but not least D. Labor strikes and trade unions is 100% wrong DO NOT PICK D IT IS WRONG
so according to my calculations the best answer here is A. Administrative reform and urban planning i hope u pass whatever u working on and i hope this helps u goodbye and have a bless day