The correct answer would be World War II. The largest amount of Americans who served in the armed forces is during the World War II. During the world war II, <span>a large standing army become officially established. Hope this is the answer that you are looking for. </span>
<span>The atmosphere contains a large amount of nitrogen. Some plants take nitrogen straight from the air and use it to build nutrients needed for growth. Atmospheric wind erodes land so it can be broken down to form life-sustaining soil.</span>
Answer:
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Spanish legal restrictions and outbreaks of disease made it difficult to enslave indigenous populations