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Creating original research
A primary source is preferable to a secondary source when creating original research.
Life expectancy, also called life expectancy, is the average number of years that a country's population can expect to live, if the same living conditions experienced at birth are maintained. Life expectancy is closely related to the quality of life that a country has, since factors such as education, health, social assistance, basic sanitation, safety at work, violence rates, absence or presence of wars and internal conflicts influence on directly.
The United States entered<span> the war because of the Germans' decision to resume the policy of unrestricted submarine warfare, and the so-called "Zimmerman telegram," intercepted by the British, in which Germany floated the idea of an alliance with Mexico.
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Why Did The US Enter WW1 - eNotes.com<span>https://www.enotes.com/homework-help/why-did-united-states-enter-world-war-400883</span>
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Im not 100% sure problay true
Explanation: