The best and most correct answer among the choices provided by your question is the second choice or letter B.
The use of submarines during World War I had made <span>naval battles the key battles of the war.</span>
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The creation of United Nations was the outcome of the April 1945 meeting in San Francisco of representatives from over fifty nations. he correct option among all the options that are given in the question is the second option. I hope that the answer has come to your help.
The men lacked experience in warfare
To build a huge army that would march the large standing armies of Germany and Austria, which were to the numbers of 9 million, the USA had to quickly build an army, when Wilson and the nation,could no longer play dumb to Germany unrestricted submarine warfare. as a result, congress,enacted the selective recruitment act that required all men, aged between 21-28 year to register with local drafts boards, as the war raged, the years were raised to 45 years. These men had not served in the army and were simply sent to battle after very little training.
