You didn't list choices, but the two possible answers would be:
<h2>Germany resumed unrestricted submarine warfare.</h2><h2>The Zimmermann Telegram revealed a German attempt to gain Mexico as an ally against the United States.</h2><h2 />
Context/detail:
Public outrage in the US against the Germans swept the nation following the sinking of the British ocean liner, Lusitania, which had happened in May, 1915. When a German U-boat (submarine) sank the Lusitania, over 1,000 persons were killed, including more than 100 Americans. The passenger liner was targeted by the Germans because they suspected weapons were being shipped to Britain in the cargo hold of the ship.
Germany managed to stave off American entry into the war at the time by pledging to stop submarine attacks. But two years later, the Germans resumed such attacks. This inflamed public opinion against Germany once again and poised America to go to war.
In addition, British intelligence intercepted and decoded a telegram (known as the "Zimmermann Telegram") that showed Germany was trying to secure Mexico as an ally against the United States. The revelation of this plan inflamed feelings in the United States. The telegram was sent in January, 1917. In March, 1917, German Foreign Secretary Arthur Zimmermann admitted the telegram was, in fact, sent by his office.
In April, 1917, the US declared war on Germany in response to the Germans' submarine warfare and the Zimmermann Telegram.
The populists party ideology resonated with the problems that farmers were facing at the time. Farmers were having problem with money supply as a results of bank inexpedience, and railroads or transportation problems. Crop failure was also affecting the farmers. The populist party agenda included <span>Increased
money supply, a rise in prices, federal loans plans, 8 hour work day,
restrictions on immigration, secret ballots, single term for VP, and
election of senators by popular vote. some of these issues were at the heart of the farmers.
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Following World War 1, many countries felt that their punishment for participating in the war was unjust. The Soviets did not support the king's war effort and decided to do opposite of him, the Italians were unhappy that the Allies didn't give them what was promised. The Germans felt that their punishment was harsh and degrading, while Spain had a civil war in which the Fascists beat the Communists.