Answer:
The Zimmerman note and unrestricted submarine warfare by Germany
Explanation:
The Zimmermann Telegram was a note from German official to offer military alliance between Mexico and Germany. President Wilson understood the diplomatic relation and broke off the relation and decided to enter the WWI.
Germany was repeatedly attacking U.S. by submarine warfare in the Atlantic that killed ore than 120 U.S. citizens on May 7, 1915 that provoked outrage in the U.S. to participate in WWI.
Hence, the two reason are The Zimmerman note and unrestricted submarine warfare by Germany.
I believe your answer is Russia! I hope this helps!! :)
-K
The excerpt mentions central government and the states but does not speak (except by mentioning) of executive branch or amendments, so we reject options 2) and 4).
Among options 1 and 3: 3 speaks of central government having the power over the states, which is the opposite of what the text says: it stresses how much power should stay with the states.
So the correct option is 1)