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The "Anglo-American Petroleum agreement" caused United states to directly involve in the Southwest Asia.
Explanation:Throughout the history of United States, foreign interventions have been continuous. Interventionism and Isolationism have been the dominant thoughts in United States. Whenever there is a threat to the home country or neighbouring countries, United states played a major role in subsiding the issues. They have been continuously providing a friendly atmosphere whenever required. The roots of involvement in middle east existed in the first world war. It became much deeper after the second world war. They considered middle east as the strategic area of the world. This is because of the transition of the United States from the net exporter to the net importer of Petroleum in the interests of Middle East.
Correct order is B, A, C, D
World War One began in 1914 but US did not join the war until 1917. It had significant impact on the war as it tipped the balance of war in the favour of the Allies.
Germany was the first country to introduce unrestricted submarine warfare in early 1915. The area around British Isles was declared a war zone by Germany. It was when Germans sank the USS Lusitania in 1915 that killed 1198 passengers, US government send a note to the German government demanding to stop the attacks.
Zimmerman telegram was intercepted and Deciphered by British intelligence in January 1917, it instructed the German ambassador to Mexico to aid Mexico if it agreed to be a German ally in any US-German conflict. After this US officially declared war on Germany.
The fourteen points was the statement of principles for peace that was to be use for peace negotiations to end the first world war. He outlines the principle while delivering a speech on peace terms and war aims to the congress on January 8,1918.